What is the Greatest Common Factor of 39720 and 39724?

Greatest common factor (GCF) of 39720 and 39724 is 4.

GCF(39720,39724) = 4

We will now calculate the prime factors of 39720 and 39724, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39720 and 39724.

How to find the GCF of 39720 and 39724?

We will first find the prime factorization of 39720 and 39724. After we will calculate the factors of 39720 and 39724 and find the biggest common factor number .

Step-1: Prime Factorization of 39720

Prime factors of 39720 are 2, 3, 5, 331. Prime factorization of 39720 in exponential form is:

39720 = 2³ × 3¹ × 5¹ × 331¹

Step-2: Prime Factorization of 39724

Prime factors of 39724 are 2, 9931. Prime factorization of 39724 in exponential form is:

39724 = 2² × 9931¹

Step-3: Factors of 39720

List of positive integer factors of 39720 that divides 39720 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 331, 662, 993, 1324, 1655, 1986, 2648, 3310, 3972, 4965, 6620, 7944, 9930, 13240, 19860

Step-4: Factors of 39724

List of positive integer factors of 39724 that divides 39720 without a remainder.

1, 2, 4, 9931, 19862

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39720 and 39724. The biggest common factor number is the GCF number.
So the greatest common factor 39720 and 39724 is 4.

Also check out the Least Common Multiple of 39720 and 39724