What is the Greatest Common Factor of 15720 and 15724?

Greatest common factor (GCF) of 15720 and 15724 is 4.

GCF(15720,15724) = 4

We will now calculate the prime factors of 15720 and 15724, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15720 and 15724.

How to find the GCF of 15720 and 15724?

We will first find the prime factorization of 15720 and 15724. After we will calculate the factors of 15720 and 15724 and find the biggest common factor number .

Step-1: Prime Factorization of 15720

Prime factors of 15720 are 2, 3, 5, 131. Prime factorization of 15720 in exponential form is:

15720 = 2³ × 3¹ × 5¹ × 131¹

Step-2: Prime Factorization of 15724

Prime factors of 15724 are 2, 3931. Prime factorization of 15724 in exponential form is:

15724 = 2² × 3931¹

Step-3: Factors of 15720

List of positive integer factors of 15720 that divides 15720 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 131, 262, 393, 524, 655, 786, 1048, 1310, 1572, 1965, 2620, 3144, 3930, 5240, 7860

Step-4: Factors of 15724

List of positive integer factors of 15724 that divides 15720 without a remainder.

1, 2, 4, 3931, 7862

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15720 and 15724. The biggest common factor number is the GCF number.
So the greatest common factor 15720 and 15724 is 4.

Also check out the Least Common Multiple of 15720 and 15724