What is the Greatest Common Factor of 27870 and 27885?

Greatest common factor (GCF) of 27870 and 27885 is 15.

GCF(27870,27885) = 15

We will now calculate the prime factors of 27870 and 27885, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 27870 and 27885.

How to find the GCF of 27870 and 27885?

We will first find the prime factorization of 27870 and 27885. After we will calculate the factors of 27870 and 27885 and find the biggest common factor number .

Step-1: Prime Factorization of 27870

Prime factors of 27870 are 2, 3, 5, 929. Prime factorization of 27870 in exponential form is:

27870 = 2¹ × 3¹ × 5¹ × 929¹

Step-2: Prime Factorization of 27885

Prime factors of 27885 are 3, 5, 11, 13. Prime factorization of 27885 in exponential form is:

27885 = 3¹ × 5¹ × 11¹ × 13²

Step-3: Factors of 27870

List of positive integer factors of 27870 that divides 27870 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 929, 1858, 2787, 4645, 5574, 9290, 13935

Step-4: Factors of 27885

List of positive integer factors of 27885 that divides 27870 without a remainder.

1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 169, 195, 429, 507, 715, 845, 1859, 2145, 2535, 5577, 9295

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 27870 and 27885. The biggest common factor number is the GCF number.
So the greatest common factor 27870 and 27885 is 15.

Also check out the Least Common Multiple of 27870 and 27885