What is the Greatest Common Factor of 27972 and 27980?

Greatest common factor (GCF) of 27972 and 27980 is 4.

GCF(27972,27980) = 4

We will now calculate the prime factors of 27972 and 27980, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 27972 and 27980.

How to find the GCF of 27972 and 27980?

We will first find the prime factorization of 27972 and 27980. After we will calculate the factors of 27972 and 27980 and find the biggest common factor number .

Step-1: Prime Factorization of 27972

Prime factors of 27972 are 2, 3, 7, 37. Prime factorization of 27972 in exponential form is:

27972 = 2² × 3³ × 7¹ × 37¹

Step-2: Prime Factorization of 27980

Prime factors of 27980 are 2, 5, 1399. Prime factorization of 27980 in exponential form is:

27980 = 2² × 5¹ × 1399¹

Step-3: Factors of 27972

List of positive integer factors of 27972 that divides 27972 without a remainder.

1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 37, 42, 54, 63, 74, 84, 108, 111, 126, 148, 189, 222, 252, 259, 333, 378, 444, 518, 666, 756, 777, 999, 1036, 1332, 1554, 1998, 2331, 3108, 3996, 4662, 6993, 9324, 13986

Step-4: Factors of 27980

List of positive integer factors of 27980 that divides 27972 without a remainder.

1, 2, 4, 5, 10, 20, 1399, 2798, 5596, 6995, 13990

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 27972 and 27980. The biggest common factor number is the GCF number.
So the greatest common factor 27972 and 27980 is 4.

Also check out the Least Common Multiple of 27972 and 27980