What is the Greatest Common Factor of 72940 and 72960?

Greatest common factor (GCF) of 72940 and 72960 is 20.

GCF(72940,72960) = 20

We will now calculate the prime factors of 72940 and 72960, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72940 and 72960.

How to find the GCF of 72940 and 72960?

We will first find the prime factorization of 72940 and 72960. After we will calculate the factors of 72940 and 72960 and find the biggest common factor number .

Step-1: Prime Factorization of 72940

Prime factors of 72940 are 2, 5, 7, 521. Prime factorization of 72940 in exponential form is:

72940 = 2² × 5¹ × 7¹ × 521¹

Step-2: Prime Factorization of 72960

Prime factors of 72960 are 2, 3, 5, 19. Prime factorization of 72960 in exponential form is:

72960 = 2⁸ × 3¹ × 5¹ × 19¹

Step-3: Factors of 72940

List of positive integer factors of 72940 that divides 72940 without a remainder.

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 521, 1042, 2084, 2605, 3647, 5210, 7294, 10420, 14588, 18235, 36470

Step-4: Factors of 72960

List of positive integer factors of 72960 that divides 72940 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 228, 240, 256, 285, 304, 320, 380, 384, 456, 480, 570, 608, 640, 760, 768, 912, 960, 1140, 1216, 1280, 1520, 1824, 1920, 2280, 2432, 3040, 3648, 3840, 4560, 4864, 6080, 7296, 9120, 12160, 14592, 18240, 24320, 36480

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72940 and 72960. The biggest common factor number is the GCF number.
So the greatest common factor 72940 and 72960 is 20.

Also check out the Least Common Multiple of 72940 and 72960