What is the Greatest Common Factor of 28530 and 28545?

Greatest common factor (GCF) of 28530 and 28545 is 15.

GCF(28530,28545) = 15

We will now calculate the prime factors of 28530 and 28545, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28530 and 28545.

How to find the GCF of 28530 and 28545?

We will first find the prime factorization of 28530 and 28545. After we will calculate the factors of 28530 and 28545 and find the biggest common factor number .

Step-1: Prime Factorization of 28530

Prime factors of 28530 are 2, 3, 5, 317. Prime factorization of 28530 in exponential form is:

28530 = 2¹ × 3² × 5¹ × 317¹

Step-2: Prime Factorization of 28545

Prime factors of 28545 are 3, 5, 11, 173. Prime factorization of 28545 in exponential form is:

28545 = 3¹ × 5¹ × 11¹ × 173¹

Step-3: Factors of 28530

List of positive integer factors of 28530 that divides 28530 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 317, 634, 951, 1585, 1902, 2853, 3170, 4755, 5706, 9510, 14265

Step-4: Factors of 28545

List of positive integer factors of 28545 that divides 28530 without a remainder.

1, 3, 5, 11, 15, 33, 55, 165, 173, 519, 865, 1903, 2595, 5709, 9515

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28530 and 28545. The biggest common factor number is the GCF number.
So the greatest common factor 28530 and 28545 is 15.

Also check out the Least Common Multiple of 28530 and 28545