What is the Greatest Common Factor of 28615 and 28620?

Greatest common factor (GCF) of 28615 and 28620 is 5.

GCF(28615,28620) = 5

We will now calculate the prime factors of 28615 and 28620, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28615 and 28620.

How to find the GCF of 28615 and 28620?

We will first find the prime factorization of 28615 and 28620. After we will calculate the factors of 28615 and 28620 and find the biggest common factor number .

Step-1: Prime Factorization of 28615

Prime factors of 28615 are 5, 59, 97. Prime factorization of 28615 in exponential form is:

28615 = 5¹ × 59¹ × 97¹

Step-2: Prime Factorization of 28620

Prime factors of 28620 are 2, 3, 5, 53. Prime factorization of 28620 in exponential form is:

28620 = 2² × 3³ × 5¹ × 53¹

Step-3: Factors of 28615

List of positive integer factors of 28615 that divides 28615 without a remainder.

1, 5, 59, 97, 295, 485, 5723

Step-4: Factors of 28620

List of positive integer factors of 28620 that divides 28615 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 53, 54, 60, 90, 106, 108, 135, 159, 180, 212, 265, 270, 318, 477, 530, 540, 636, 795, 954, 1060, 1431, 1590, 1908, 2385, 2862, 3180, 4770, 5724, 7155, 9540, 14310

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28615 and 28620. The biggest common factor number is the GCF number.
So the greatest common factor 28615 and 28620 is 5.

Also check out the Least Common Multiple of 28615 and 28620