What is the Greatest Common Factor of 72620 and 72640?

Greatest common factor (GCF) of 72620 and 72640 is 20.

GCF(72620,72640) = 20

We will now calculate the prime factors of 72620 and 72640, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72620 and 72640.

How to find the GCF of 72620 and 72640?

We will first find the prime factorization of 72620 and 72640. After we will calculate the factors of 72620 and 72640 and find the biggest common factor number .

Step-1: Prime Factorization of 72620

Prime factors of 72620 are 2, 5, 3631. Prime factorization of 72620 in exponential form is:

72620 = 2² × 5¹ × 3631¹

Step-2: Prime Factorization of 72640

Prime factors of 72640 are 2, 5, 227. Prime factorization of 72640 in exponential form is:

72640 = 2⁶ × 5¹ × 227¹

Step-3: Factors of 72620

List of positive integer factors of 72620 that divides 72620 without a remainder.

1, 2, 4, 5, 10, 20, 3631, 7262, 14524, 18155, 36310

Step-4: Factors of 72640

List of positive integer factors of 72640 that divides 72620 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 227, 320, 454, 908, 1135, 1816, 2270, 3632, 4540, 7264, 9080, 14528, 18160, 36320

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72620 and 72640. The biggest common factor number is the GCF number.
So the greatest common factor 72620 and 72640 is 20.

Also check out the Least Common Multiple of 72620 and 72640