What is the Greatest Common Factor of 39615 and 39630?

Greatest common factor (GCF) of 39615 and 39630 is 15.

GCF(39615,39630) = 15

We will now calculate the prime factors of 39615 and 39630, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39615 and 39630.

How to find the GCF of 39615 and 39630?

We will first find the prime factorization of 39615 and 39630. After we will calculate the factors of 39615 and 39630 and find the biggest common factor number .

Step-1: Prime Factorization of 39615

Prime factors of 39615 are 3, 5, 19, 139. Prime factorization of 39615 in exponential form is:

39615 = 3¹ × 5¹ × 19¹ × 139¹

Step-2: Prime Factorization of 39630

Prime factors of 39630 are 2, 3, 5, 1321. Prime factorization of 39630 in exponential form is:

39630 = 2¹ × 3¹ × 5¹ × 1321¹

Step-3: Factors of 39615

List of positive integer factors of 39615 that divides 39615 without a remainder.

1, 3, 5, 15, 19, 57, 95, 139, 285, 417, 695, 2085, 2641, 7923, 13205

Step-4: Factors of 39630

List of positive integer factors of 39630 that divides 39615 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 1321, 2642, 3963, 6605, 7926, 13210, 19815

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39615 and 39630. The biggest common factor number is the GCF number.
So the greatest common factor 39615 and 39630 is 15.

Also check out the Least Common Multiple of 39615 and 39630