What is the Greatest Common Factor of 39640 and 39656?

Greatest common factor (GCF) of 39640 and 39656 is 8.

GCF(39640,39656) = 8

We will now calculate the prime factors of 39640 and 39656, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39640 and 39656.

How to find the GCF of 39640 and 39656?

We will first find the prime factorization of 39640 and 39656. After we will calculate the factors of 39640 and 39656 and find the biggest common factor number .

Step-1: Prime Factorization of 39640

Prime factors of 39640 are 2, 5, 991. Prime factorization of 39640 in exponential form is:

39640 = 2³ × 5¹ × 991¹

Step-2: Prime Factorization of 39656

Prime factors of 39656 are 2, 4957. Prime factorization of 39656 in exponential form is:

39656 = 2³ × 4957¹

Step-3: Factors of 39640

List of positive integer factors of 39640 that divides 39640 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 3964, 4955, 7928, 9910, 19820

Step-4: Factors of 39656

List of positive integer factors of 39656 that divides 39640 without a remainder.

1, 2, 4, 8, 4957, 9914, 19828

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39640 and 39656. The biggest common factor number is the GCF number.
So the greatest common factor 39640 and 39656 is 8.

Also check out the Least Common Multiple of 39640 and 39656