What is the Greatest Common Factor of 28920 and 28940?

Greatest common factor (GCF) of 28920 and 28940 is 20.

GCF(28920,28940) = 20

We will now calculate the prime factors of 28920 and 28940, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28920 and 28940.

How to find the GCF of 28920 and 28940?

We will first find the prime factorization of 28920 and 28940. After we will calculate the factors of 28920 and 28940 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 28940

Prime factors of 28940 are 2, 5, 1447. Prime factorization of 28940 in exponential form is:

28940 = 2² × 5¹ × 1447¹

Step-3: Factors of 28920

List of positive integer factors of 28920 that divides 28920 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

Step-4: Factors of 28940

List of positive integer factors of 28940 that divides 28920 without a remainder.

1, 2, 4, 5, 10, 20, 1447, 2894, 5788, 7235, 14470

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28920 and 28940. The biggest common factor number is the GCF number.
So the greatest common factor 28920 and 28940 is 20.

Also check out the Least Common Multiple of 28920 and 28940