What is the Greatest Common Factor of 28915 and 28920?

Greatest common factor (GCF) of 28915 and 28920 is 5.

GCF(28915,28920) = 5

We will now calculate the prime factors of 28915 and 28920, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28915 and 28920.

How to find the GCF of 28915 and 28920?

We will first find the prime factorization of 28915 and 28920. After we will calculate the factors of 28915 and 28920 and find the biggest common factor number .

Step-1: Prime Factorization of 28915

Prime factors of 28915 are 5, 5783. Prime factorization of 28915 in exponential form is:

28915 = 5¹ × 5783¹

Step-2: Prime Factorization of 28920

Prime factors of 28920 are 2, 3, 5, 241. Prime factorization of 28920 in exponential form is:

28920 = 2³ × 3¹ × 5¹ × 241¹

Step-3: Factors of 28915

List of positive integer factors of 28915 that divides 28915 without a remainder.

1, 5, 5783

Step-4: Factors of 28920

List of positive integer factors of 28920 that divides 28915 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 241, 482, 723, 964, 1205, 1446, 1928, 2410, 2892, 3615, 4820, 5784, 7230, 9640, 14460

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28915 and 28920. The biggest common factor number is the GCF number.
So the greatest common factor 28915 and 28920 is 5.

Also check out the Least Common Multiple of 28915 and 28920