What is the Greatest Common Factor of 39540 and 39555?

Greatest common factor (GCF) of 39540 and 39555 is 15.

GCF(39540,39555) = 15

We will now calculate the prime factors of 39540 and 39555, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39540 and 39555.

How to find the GCF of 39540 and 39555?

We will first find the prime factorization of 39540 and 39555. After we will calculate the factors of 39540 and 39555 and find the biggest common factor number .

Step-1: Prime Factorization of 39540

Prime factors of 39540 are 2, 3, 5, 659. Prime factorization of 39540 in exponential form is:

39540 = 2² × 3¹ × 5¹ × 659¹

Step-2: Prime Factorization of 39555

Prime factors of 39555 are 3, 5, 293. Prime factorization of 39555 in exponential form is:

39555 = 3³ × 5¹ × 293¹

Step-3: Factors of 39540

List of positive integer factors of 39540 that divides 39540 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 659, 1318, 1977, 2636, 3295, 3954, 6590, 7908, 9885, 13180, 19770

Step-4: Factors of 39555

List of positive integer factors of 39555 that divides 39540 without a remainder.

1, 3, 5, 9, 15, 27, 45, 135, 293, 879, 1465, 2637, 4395, 7911, 13185

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39540 and 39555. The biggest common factor number is the GCF number.
So the greatest common factor 39540 and 39555 is 15.

Also check out the Least Common Multiple of 39540 and 39555