Prime Factorization of 82 is 2 x 41. As we can see there are Prime Factors common to both numbers 3, 5. This answer is. Step 2 If any of the given numbers (45, 60) is a multiple of 2, divide it by 2 and write the. Step 1 Divide 70 (larger number) by 45 (smaller number). The GCF calculator is a handy tool to calculate this. 4 7. The above numbers do not have any common prime factor. GCF of 45 and 70 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. Step 1 Since 60 > 45, we apply the division lemma to 60 and 45, to get. Step 2 - GCF is the product of the factors that are common to each of the given numbers. MathStep (Works offline) Download our mobile app and learn how to find GCF of upto four numbers in your own time Android and iPhone iPad. First we get the prime factorizations of 24 2 &215; 2 &215; 2 &215; 3 and 56 2 &215; 2 &215; 2 &215; 7. Here is a handy little calculator you can use to find the. GCF of 45 and 90 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. Multiplying these together gives 3x5 15 And so 15 is the HCF of 45 and 60. Make use of GCF of two or more numbers calculator to determine the Greatest Common Factor of 20, 40, 60 i. Here X 45 and Y 36. The factors of 45 are 1, 3, 5, 9, 15, and 45. 45 15 x 3 0. In our example 60 45 1" " with remainder. As visible, 45 and 60 have common prime factors. 45 3x3x5 60 2x2x3x5 The next step is to find the common prime factors. It is commonly denoted as GCF (a, b). The corresponding divisor (5) is the GCF of 20 and 45. Finding the LCM through GCF. Given Input Data is 60, 45, 82. Step 2 Divide all of the remaining even values by 2, remove the duplicates and sort. The first method to find GCF for numbers 45 and 60 is to list all factors for both numbers and pick the highest common. The GCF of 45 and 60 is 15. What is the greatest common factor of 45 and 60 The GCF of 45 and 60 is 15. GCF of 45 and 70 by Long Division. The greatest common factor of the numbers 45, 75 and 120 is 15. Then find what factors 60 and 45 have in common. 45 15 x 3 0. Find the GCF of the following monomials. Oct 14, 2023 This calculator factors a set of positive integers to find the common factors (common divisors) of those integers. Least Common Multiple (LCM) of 45 and 60 with Primes. Factorize of the above numbers 15 3 5 45 3 2 5 60 2 2 3 5 Build a prime factors table. In other words, express each number as a product of numbers written in an. GCF of two numbers can be found by using the upside-down cake method. Prime factorization of 45 3x3x5Prime factorization of 60 2x2x3x5Prime factorization of 160 2x2x2x2x2x5Only common factors are 5 (and 1). All Prime Factors of 60 2, 2, 3, 5. Step 2 Since the remainder 0, we will divide the divisor of step 1 (45) by the remainder (36). The GCF is the product of the circled factors. Step 1 Find the smallest prime number that is a factor of at least one of the numbers, 10 and 15. 900 75 12. Tap for more steps. Calculate Greatest Common Factor for 45, 60 and 75. We found the factors and prime factorization of 45 and 75. Step 2. Step 2 Write out the prime factorizations for each. The GCF of 45 and 60 is the largest positive integer by which both 45 and 60 can be divided. As a result, the Greatest Common Factor (GCF) of 45 and 60 is equal to 3 x 5, which equals the product of 3 and 5 raised to the powers of their least number of occurrences or smallest exponent among the Prime Factorizations GCF (45, 60) 3 1 x 5 1. GCF is equal to the multiplication of those prime factors. Step 1 Find the smallest prime number that is a factor of at least one of the numbers, 10 and 15. To find the GCF, multiply all the prime factors common to both numbers Therefore, GCF 3 &215; 5. Step 2 Since the remainder 0, the divisor (45) is the GCF of 45 and 90. Therefore, the greatest common factor is 5. As we can see there are Prime Factors common to both numbers 2, 3. GCF of 24 and 32. Looking at the occurences of common prime factors in 24, 18, 24, and 60 we can see that the commonly occuring prime factors are 2 and 3. Write down the prime factors of 45 and 60. Repeat the process if there are even numbers in the list 60 2 30. LCM of 30, 45 2 1 3 2 5 1 90. Step 2 Since the remainder 0, the divisor (45) is the GCF of 45 and 90. Step 1 Find the smallest prime number that is a factor of at least one of the numbers, 45 and 60. Apr 28, 2022 The factors of 45 are 1, 3, 5, 9, 15, and 45. Step 1 Divide 45 (larger number) by 25 (smaller number). The biggest common factor number is the GCF number. Answer and Explanation. What is the greatest common factor of 25 45 60 The highest common integral factor is 5, because 25 52, five is an integral factor of both 45 and 60, and 25 is not an integral factor of either 45 or 60. Also check out the Least Common Multiple of 45 and 50. Free Greatest Common Factor (GCF) calculator - Find the gcf of two or more numbers step-by-step. GCF of 15, 45, 60 is 15. GCF of 72 and 84 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. Least Common Denominator of 45, 60, 90. Step 2 Find the prime factorization of 60. To find the GCF of 45 and 60, you can list the factors of each number and find the largest factor they have in common. 45 3 x 3 x 5. Otherwise repeat with the smaller number and the remainder. Now that we have the list of prime factors, we need to find any which are common for each number. Now that we have the list of prime factors, we need to find any which are common for each number. , 2 &215; 2 &215; 3 &215; 7 84. What is the GCF of 40 48 and 60. GCF of 45 Calculator. Thus, GCF (60,90) 2 1 3 1 5 1 30. To find the GCF, multiply all the prime factors common to both numbers Therefore, GCF 3 5. To find the GCF of more than two values see our Greatest Common Factor Calculator. Step 3 Repeat this process until the remainder 0. Also check out the Least Common Multiple of 45 and 105. Finding GCF for 60 and 90 by Prime Factorization. Step 2 Since the remainder 0, we will divide the divisor of step 1 (45) by the remainder (30). Notice the only number present in all sets of factors is 2, which appears in common twice, so the GCF is 2 &215; 2 4. Now let&39;s look at each methods, and calculate the GCF of 45 and 60. Therefore, the GCF of 45 and 60 is the same as the Greatest Common Factor of 45 and 60. GCF is equal to the multiplication of those prime factors. Prime factors of 60 2 2 3 5 2 2 3 5. Step 1 Divide 90 (larger number) by 45 (smaller number). The GCF of 45 and 60 is 15. GCF of 15 and 45 15; GCF of 30 and 60 Examples. Factors of 45 are 1, 3, 5, 9, 15. Use the LCM by GCF formula to calculate the least common multiples of. The GCF is the product of the circled factors. Now we need to multiply them to find GCF 3 5 15. You can use our greatest common factor calculator to find the greatest common factor (GCF) of a given set of numbers. The GCF of 45, 60, and 75 is 15. The greatest number that divides 45 and 105 exactly is their greatest common factor, i. 1, 3, 5, 9, 15, 45 Factors of 60. The distributive property helps us factor out the greatest common factor (GCF) in math problems. So we write this 60 145 15. Step 4 Therefore, the greatest common factor of 45. As a result, the Greatest Common Factor (GCF) of 45 and 60 is equal to 3 x 5, which equals the product of 3 and 5 raised to the powers of their least number of occurrences or. Rewrite each term as a product using the GCF. Step 2 Since the remainder 0, we will divide the divisor of step 1 (45) by the remainder (35). Given Input numbers are 45, 90, 60, 165. Here, is the formula for finding LCM using GCF LCM(a,b) (a &215; b) GCF(a,b). Step 2 Since the remainder 0, the divisor (45) is the GCF of 45 and 90. GCF of 10, 40, 26 and 2; GCF of 12, 60, 45 and 3; Greatest Common Factor. , 2 x 2 x 5. Step 3 Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf GCF 3. 1, 2, 5, 10, 25. Step 1 Divide 75 (larger number) by 45 (smaller number). LCD of 45, 60 using LCD of two or more numbers Calculator i. Factors of 45 are 1, 3, 5, 9, 15. So we write this 60 145 15. Step 1 Divide 60 (larger number) by 25 (smaller number). Once we have these, all we have to do is to find the one that is the biggest common number from the 2 lists. GCF of 25 and 60 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. All Prime Factors of 60 2, 2, 3, 5. However, I suspect that you asked for the gcf of 30,45,60 and 105 and the commas were stripped (as they cause problems with accessing questions across the internet - putting a space after the comma would have left the numbers readable), in which case gcf(30, 45, 60, 105) 15. List of positive integer factors of 45 that divides 65 without a remainder. Note We can also find the GCF of 45 and 60 using the prime factorization method. Online Tool GCF Calculator will make it easy for you to find the GCF of two numbers in the split second. GCF of 45 and 60 by Listing Common Factors. Free Greatest Common Factor (GCF) calculator - Find the gcf of two or more numbers step-by-step. So the largest number we can divide both 12 and 30 exactly by is 6, like this The Greatest Common Factor of 12 and 30 is 6. Greatest Common Factor (GCF) of two or three numbers. When trying to determine the LCM of more than two numbers, for example LCM (a, b, c) find the LCM of a and b where the. Find the prime factorization of 90. Apr 6, 2023 Answer Greatest Common Factor of 45 and 105 15. Find the GCF 30 , 42 , 60 , 48, , , Step 1. What are the common factors of 45 and 900 Since 45 is a factor of 900, all of its factors are common. GCF of 45, 60, 75 is 15. So, follow the step by step explanation & check the answer for HCF (45,60,150). So the greatest common factor 45 and 105 is 15. Step 2 Since the remainder 0, we will divide the divisor of step 1 (45) by the remainder (35). 210 2357. GCF of 25 and 60 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. Ex 10, 15, 20. 1 &215; 12 12. As we can see there are Prime Factors common to both numbers 2, 3, 5. List of positive integer factors of 50 that divides 45 without a remainder. We can find this by listing the factors of each number and finding the largest factor that they share. If the LCM of 45 and 30 is 90, Find its GCF. We found the factors and prime factorization of 45 and 48. GCF of 24 and 32. The corresponding divisor (15) is the GCF of 15 and 45. Step 2 If any of the given numbers (10, 15) is a multiple of 2, divide it. Find the greatest common factor using factor trees. As we can see there are Prime Factors common to both numbers 3, 3. The first few multiples of 30 and 45 are (30, 60, 90, 120, 150,. The remainder has now become zero, so our procedure stops. 210 2357. The biggest common factor number is the GCF number. Sometime you may need to identify the greatest common factor (GCF) of two or more numbers. GCF of 10, 40, 26 and 2; GCF of 12, 60, 45 and 3; Greatest Common Factor. Now, we repeat this by replacing 60 with 45 and 45 with 15. Since the divisor at this stage is 15, the HCF of 45 and. What are the common factors of 45 and 900 Since 45 is a factor of 900, all of its factors are common. Therefore, the prime factors of 60 are 2, 3, and 5 and the Prime factorization of 60 2 2 3 5. 3 &215; 5 is the common prime factor of 45, 60 and 75. The GCF of 45 and 60 is 15. Step 2 Since the remainder 0, the divisor (20) is the GCF of 60 and 20. The biggest factor of 45 is 15. This free prime factorization calculator finds the prime factors as well the factor tree of a given integer. 15 largest integer that divides all the numbers equally. Factors of 45 and 105 Factors of 45 1, 3, 5, 9, 15, 45. The GCF of 45 and 60 is 15. Step 1 Divide 60 (larger number) by 25 (smaller number). MathStep (Works offline) Download our mobile app and learn how to find GCF of upto four numbers in your own time Android and iPhone iPad. Therefore, the GCF of 45 and 60 is the same as the Greatest Common Factor of 45 and 60. Given Input numbers are 45, 90, 60, 165. 60 2. What is the greatest common factor of 45 and 60 The GCF of 45 and 60 is 15. Factorize of the above numbers 15 3 5 45 3 2 5 60 2 2 3 5 Build a prime factors table. Also Check GCF of 60 and 20 20; GCF of. How to Find the GCF of 33 and 45 Answer Greatest Common Factor of 33 and 45 3. Find the GCF of 20 and 35 using the long division method. GCF of 45 and 76 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. List of positive integer factors of 45 that divides 30 without a remainder. Make use of GCF of two or more numbers calculator to determine the Greatest Common Factor of 45, 60, 75 i. Step 3 Repeat this process until the remainder 0. See full answer below. The GCF of 45, 60, and 75 is 15. Therefore, the greatest common factor of 20 and 30 is 10. 45; 50; 60; 75; 90; 100; 150; 180; 225; 300; 450; What are the factors of 900 in 2 pairs 1 &215; 900 900; 2 &215; 450 900; 3 &215; 300 900; 4 &215; 225 900; 5 &215; 180 900; 6 &215; 150 900;. Step 4 Therefore, the greatest common factor of 60. 45 3 &215; 3 &215; 5. Step 4 Therefore, the greatest common factor of 45. The greatest common factor of the numbers 45, 75 and 120 is 15. Factors of 105 1, 3, 5, 7, 15, 21, 35, 105. Step 2 Since the remainder 0, the divisor (15) is the GCF of 15 and 60. Step 3 Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf GCF 3 x 5 15. Highest Common Factor of 45,60,90 is 15. Step 3 Repeat this process until the remainder 0. GCF of 24 and 32. List all the factors for 18,54 18, 54 to find the common factors. These are the steps on how to find the greatest common factor of two numbers using Prime Factorization. Here we will list all the Factors of 45, 50 and 60. Therefore, the greatest common factor of 45 and 60. Prime Factorization of 36 is 2 x 2 x 3 x 3. Least Common Multiple (LCM) of 45 and 75 with Primes. Oct 18, 2023 When R0, the divisor, b, in the last equation is the greatest common factor, GCF. Doing this gives us 7. If we find such a prime number, we write it to the left. Step 3 Repeat this process until the remainder 0. HCF is the largest positive number that divides the given numbers, without any reminder. GCF of 15 and 60 by Long Division. Step 4 Therefore, the least common. This sum can be represented as a product of the GCF by dividing 105 by the GCF (15). We found the factors and prime factorization of 45 and 56. To find the GCF, take the product of all the common factors of each number. 45 90 135. The factors of 50 are 1, 2, 5, 10, 25, and 50. First, make a factor tree for each number. As we can see there are Prime Factors common to both numbers 3, 3, 5. Calculate Greatest Common Factor for 15, 45 and 60. HCF is the largest positive number that divides the given numbers, without any reminder. GCF (45, 60, 75) 15. All Prime Factors of 60 2, 2, 3, 5. Now let's look at each methods, and calculate the GCF of 45 and 60. So the Greatest Common Factor for 60 and 90 is 30. As a result, the Greatest Common Factor (GCF) of 45 and 60 is equal to 3 x 5, which equals the product of 3 and 5 raised to the powers of their least number of occurrences or smallest exponent among the Prime Factorizations GCF (45, 60) 3 1 x 5 1. As visible, 45 and 60 have common prime factors. As we can see there are Prime Factors common to both numbers 3, 5. There are 6 common factors of 40 and 60, that are 1, 2, 4, 5, 10, and 20. To find the greatest common factor (GCF) of 45 and 60, we can use several methods, such as prime factorization, listing factors, or using the Euclidean algorithm. The procedure to use the GCF calculator is as follows Step 1 Enter two numbers in the respective input field. The common factors for 18,30,60 18, 30, 60 are 1,2,3,6 1, 2, 3, 6. Step 2 Since the remainder 0, we will divide the divisor of step 1 (45) by the remainder (30). GCF (greatest common factor) is the largest positive integer that divides evenly into two or more given numbers. Finding GCF for 15 and 60 by Prime Factorization. Step 1 Find the prime factorization of 33. Step 4 Therefore, the greatest common factor of 45. Now let's look at each methods, and calculate the GCF of 45 and 60. Therefore, the GCF of 45 and 105 is 15. The common bases are 2 and 3. In our example 60 45 1 with remainder 15. 60 45 x 1 15. Greatest common factor (GCF) Finding the greatest common factor with prime factorization; Step by Step Solution. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Here, we will use the prime factorization method, which involves expressing both numbers as products of their prime factors and finding t Read more. The distributive property helps us factor out the greatest common factor (GCF) in math problems. Let's say you want to calculate the GCD and LCM of two numbers 12 and 28. The biggest common factor number is the GCF number. Now that we have the list of prime factors, we need to find any which are common for each number. asians riding cock, craigslist boats for sale eastern shore md
Related Calculators. . Gcf 45 and 60
gcf(15,45)15 Answer link. Answer link. The biggest common factor number is the GCF number. Step 3. The GCF can be found using a variety of methods, including prime factorization and division. To calculate the prime factor, we multiply these numbers together GCF 2 x 3 6. , 2 &215; 2 4. Greatest Common Factor Greatest Common Factor of 45 and 60 What is the Greatest Common Factor (GCF) of 45 and 60 Are you on the hunt for the GCF of 45 and 60 Since you&x27;re on this page I&x27;d guess so In this quick guide, we&x27;ll walk you through how to calculate the greatest common factor for any numbers you need to check. Prime Factorization of 60 is 2 x 2 x 3 x 5. The Factors of 45 are1,3,5,9,15,and 45 The Factors of 60 are1,2,3,4,5,6,10,12,15,20,30,60 The GCF is the highest common number so the GCF is 15. Factoring Calculator. Write this prime number (3) on the left of the. Step 1 Find the prime factorization of 45. Write this (2) on the left of the given numbers (45 and 60), separated as per the ladder arrangement. Step 1 Divide 90 (larger number) by 45 (smaller number). Also check out the Least Common Multiple of 45 and 75. The biggest common factor number is the GCF number. The greatest common factor of integers a and b is the largest positive number that is divisible by both a and b without a remainder. Factors of 45 1, 3, 5, 9, 15, 45; Factors of 60 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60; There are 4 common factors of 45 and 60, that are 1, 3, 5, and 15. 15 is the biggest number that is a factor of 15, 45 and 120. Therefore, the GCF of 45 and 60 is the same as the Greatest Common Factor of 45 and. Step 1 Divide 60 (larger number) by 45 (smaller number). Find the greatest common factor using factor trees. Now, consider the largest number as 'a' from the given number ie. Step 2 Since the reminder 45 0, we apply division lemma to 15 and 45, to get. The factors of a number include all divisors of that number. The second method to find GCF for numbers 15 and 60 is to list all Prime Factors for both numbers and multiply the common ones All Prime Factors of 15 3, 5. 60 2 2 3 5. Therefore, the GCF of 45 and 60 is the same as the Greatest Common Factor of 45 and 60. Step 2 Divide all of the remaining even values by 2, remove the duplicates and sort. Therefore, the Greatest Common Factor of 45 and 60 by. It's also called the greatest common divisor (GCD). Then, select the greatest number that appears in lists. Also check out the Least Common Multiple of 45 and 56. Exercise 7. find the gcf of 45 and 60 using prime factorization find the gcf of 32 , 56 and 96 using prime factorization. The methods mentioned above are not the only methods for finding the GCF of a group of numbers. Step 1 Find the smallest prime number that is a factor of at least one of the numbers, 45 and 60. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework. Also check out the Least Common Multiple of 45 and 105. So the greatest common factor 45 and 48 is 3. Prime Factors for 28 2, 2, and 7. What is the greatest common factor of 25 45 60 The highest common integral factor is 5, because 25 52, five is an integral factor of both 45 and 60, and 25 is not an integral factor of either 45 or 60. Factors of 105 1, 3, 5, 7, 15, 21, 35, 105. GCF of 45 and 50 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. So the greatest common factor 45 and 75 is 15. The biggest common factor number is the GCF number. Step 3 Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf GCF 3 x 3 9. Now let&39;s add the numbers 45 60 105. Step 4 Therefore, the greatest common factor of 45. What is the greatest common factor of 45 and 60 Detailed Answer The Greatest Common Factor (GCF) for 45 and 60, notation CGF (45,60), is 15. The second method to find GCF for numbers 45 and 90 is to list all Prime Factors for both numbers and multiply the common ones All Prime Factors of 45 3, 3, 5. The first step to find the gcf of 45 and 105 is to list the factors of each number. To find the GCF of two numbers, you first split them both into their prime factors. Factors of 45 1, 3, 5, 9, 15, 45. A faster method would be to use repetitive division to find the highest common factors. We need to calculate greatest common factor 45 and 60, than apply into the LCM equation. Step 1 Find the smallest prime number that is a factor of at least one of the numbers, 10 and 15. So the greatest common factor 60 and 45 is 15. 45 3 x 3 x 5. Step 1 Divide 60 (larger number) by 45 (smaller number). GCF of 45 and 105. Therefore, GCF of 45 and. If you want to learn more about the algorithm and perhaps try it. The prime factors of 45 are 3, 3, and 5. 33 3 x 11. The biggest common factor number is the GCF number. Step 1 Find the prime factorization of 45. What are the common factors of 45 and 900 Since 45 is a factor of 900, all of its factors are common. When R0, the divisor, b, in the last equation is the greatest common factor, GCF. Find the prime factorization of 297. Therefore, the greatest common factor of 45 and 60. -50m4 n7 and 40m2 n10. This way, you can see which factors. As we can see there are Prime Factors common to both numbers 2, 3, 5. Other Ways to Solve. Steps to find LCM. Step 3 Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf GCF 3 x 5 15. 1, 2, 4, 5, 10, 20 Factors of 45. Here X 45 and Y 36. Factors of 15. If you want to learn more about the algorithm and perhaps try it. Rewrite each term as a product using the GCF. If we find such a prime number, we write it to the left. GCD (0,B) B. The GCF can be found using a variety of methods, including prime factorization and division. The number 1 and the number itself are always factors of the given number. Calculate GCF of numbers 45, 60, 75 is 15 GCF (45, 60, 75) 15 Finding GCF of 45, 60, 75 using Factoring Given Input numbers are 45, 60, 75 To find the GCF of numbers using factoring list out all the factors of each number Factors of 45 List of positive integer factors of 45 that divides 45 without a remainder. GCF of. The prime factors of 45 are 3, 3, and 5. Answer link. Step 1 - Represent the numbers in the prime factored form. 15 Here are two methods Method 1 - Identify common prime factors and multiply Find the prime factorisations of each of the. Step 2 Since the remainder 0, the divisor (15) is the GCF of 15 and 45. Click "Calculate" to see all factors of each number as well as the greatest common factor (GCF). GCF of 60 and 90 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. GCF is the product of the factors which are common to each of the given. Common factors of 40 and 60 2, 2, 5. So, as we can see, the Greatest Common Factor or Divisor is 12, because it is the greatest number that divides evenly into all of them. Free Greatest Common Factor (GCF) calculator - Find the gcf of two or more numbers step-by-step. Hope it helps you. Find the GCF of 20 and 35 using the long division method. The greatest common factor (GCF) of two numbers is the largest number that divides both of them without leaving a remainder. What is the GCF of 45 and 60 The answer is 15. Step 1 Divide 60 (larger number) by 20 (smaller number). List all the factors for 18,30,60 18, 30, 60 to find the common factors. Free Greatest Common Factor (GCF) calculator - Find the gcf of two or more numbers step-by-step. We found the factors and prime factorization of 45 and 105. This calculator will help you find the greatest common factor (GCF) of two numbers. Now we need to multiply them to find GCF 3 &215; 5 15. GCF of 44 and 60 (or) GCF of 45 and 30 (or) GCF of 32 and 48. Therefore, the greatest common factor is 5. Since the difference between the two consecutive. Otherwise repeat with the smaller number and the remainder. The GCF can be found using a variety of methods, including prime factorization and division. Step 1 Divide 81 (larger number) by 45 (smaller number). Once we have these, all we have to do is to find the one that is the biggest common number from the 2 lists. GCF (45,60) 15 We will now calculate the prime factors of 45 and 60, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 45 and 60. Other Ways to Solve. The GCF of 21 and 45 is 3. Find the GCF of 20 and 35 using the long division method. Also check out the Least Common Multiple of 15 and 60. Prime factors of 45 3 5 3 3 5 3. . deepthi sunaina songs