What is the Greatest Common Factor of 31901 and 31920?

Greatest common factor (GCF) of 31901 and 31920 is 19.

GCF(31901,31920) = 19

We will now calculate the prime factors of 31901 and 31920, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31901 and 31920.

How to find the GCF of 31901 and 31920?

We will first find the prime factorization of 31901 and 31920. After we will calculate the factors of 31901 and 31920 and find the biggest common factor number .

Step-1: Prime Factorization of 31901

Prime factors of 31901 are 19, 23, 73. Prime factorization of 31901 in exponential form is:

31901 = 19¹ × 23¹ × 73¹

Step-2: Prime Factorization of 31920

Prime factors of 31920 are 2, 3, 5, 7, 19. Prime factorization of 31920 in exponential form is:

31920 = 2⁴ × 3¹ × 5¹ × 7¹ × 19¹

Step-3: Factors of 31901

List of positive integer factors of 31901 that divides 31901 without a remainder.

1, 19, 23, 73, 437, 1387, 1679

Step-4: Factors of 31920

List of positive integer factors of 31920 that divides 31901 without a remainder.

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 48, 56, 57, 60, 70, 76, 80, 84, 95, 105, 112, 114, 120, 133, 140, 152, 168, 190, 210, 228, 240, 266, 280, 285, 304, 336, 380, 399, 420, 456, 532, 560, 570, 665, 760, 798, 840, 912, 1064, 1140, 1330, 1520, 1596, 1680, 1995, 2128, 2280, 2660, 3192, 3990, 4560, 5320, 6384, 7980, 10640, 15960

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31901 and 31920. The biggest common factor number is the GCF number.
So the greatest common factor 31901 and 31920 is 19.

Also check out the Least Common Multiple of 31901 and 31920