What is the Greatest Common Factor of 38631 and 38640?

Greatest common factor (GCF) of 38631 and 38640 is 3.

GCF(38631,38640) = 3

We will now calculate the prime factors of 38631 and 38640, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 38631 and 38640.

How to find the GCF of 38631 and 38640?

We will first find the prime factorization of 38631 and 38640. After we will calculate the factors of 38631 and 38640 and find the biggest common factor number .

Step-1: Prime Factorization of 38631

Prime factors of 38631 are 3, 79, 163. Prime factorization of 38631 in exponential form is:

38631 = 3¹ × 79¹ × 163¹

Step-2: Prime Factorization of 38640

Prime factors of 38640 are 2, 3, 5, 7, 23. Prime factorization of 38640 in exponential form is:

38640 = 2⁴ × 3¹ × 5¹ × 7¹ × 23¹

Step-3: Factors of 38631

List of positive integer factors of 38631 that divides 38631 without a remainder.

1, 3, 79, 163, 237, 489, 12877

Step-4: Factors of 38640

List of positive integer factors of 38640 that divides 38631 without a remainder.

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 48, 56, 60, 69, 70, 80, 84, 92, 105, 112, 115, 120, 138, 140, 161, 168, 184, 210, 230, 240, 276, 280, 322, 336, 345, 368, 420, 460, 483, 552, 560, 644, 690, 805, 840, 920, 966, 1104, 1288, 1380, 1610, 1680, 1840, 1932, 2415, 2576, 2760, 3220, 3864, 4830, 5520, 6440, 7728, 9660, 12880, 19320

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 38631 and 38640. The biggest common factor number is the GCF number.
So the greatest common factor 38631 and 38640 is 3.

Also check out the Least Common Multiple of 38631 and 38640