What is the Greatest Common Factor of 9720 and 9724?

Greatest common factor (GCF) of 9720 and 9724 is 4.

GCF(9720,9724) = 4

We will now calculate the prime factors of 9720 and 9724, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9720 and 9724.

How to find the GCF of 9720 and 9724?

We will first find the prime factorization of 9720 and 9724. After we will calculate the factors of 9720 and 9724 and find the biggest common factor number .

Step-1: Prime Factorization of 9720

Prime factors of 9720 are 2, 3, 5. Prime factorization of 9720 in exponential form is:

9720 = 2³ × 3⁵ × 5¹

Step-2: Prime Factorization of 9724

Prime factors of 9724 are 2, 11, 13, 17. Prime factorization of 9724 in exponential form is:

9724 = 2² × 11¹ × 13¹ × 17¹

Step-3: Factors of 9720

List of positive integer factors of 9720 that divides 9720 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 648, 810, 972, 1080, 1215, 1620, 1944, 2430, 3240, 4860

Step-4: Factors of 9724

List of positive integer factors of 9724 that divides 9720 without a remainder.

1, 2, 4, 11, 13, 17, 22, 26, 34, 44, 52, 68, 143, 187, 221, 286, 374, 442, 572, 748, 884, 2431, 4862

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 9720 and 9724. The biggest common factor number is the GCF number.
So the greatest common factor 9720 and 9724 is 4.

Also check out the Least Common Multiple of 9720 and 9724