What is the Greatest Common Factor of 31530 and 31545?

Greatest common factor (GCF) of 31530 and 31545 is 15.

GCF(31530,31545) = 15

We will now calculate the prime factors of 31530 and 31545, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31530 and 31545.

How to find the GCF of 31530 and 31545?

We will first find the prime factorization of 31530 and 31545. After we will calculate the factors of 31530 and 31545 and find the biggest common factor number .

Step-1: Prime Factorization of 31530

Prime factors of 31530 are 2, 3, 5, 1051. Prime factorization of 31530 in exponential form is:

31530 = 2¹ × 3¹ × 5¹ × 1051¹

Step-2: Prime Factorization of 31545

Prime factors of 31545 are 3, 5, 701. Prime factorization of 31545 in exponential form is:

31545 = 3² × 5¹ × 701¹

Step-3: Factors of 31530

List of positive integer factors of 31530 that divides 31530 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 1051, 2102, 3153, 5255, 6306, 10510, 15765

Step-4: Factors of 31545

List of positive integer factors of 31545 that divides 31530 without a remainder.

1, 3, 5, 9, 15, 45, 701, 2103, 3505, 6309, 10515

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31530 and 31545. The biggest common factor number is the GCF number.
So the greatest common factor 31530 and 31545 is 15.

Also check out the Least Common Multiple of 31530 and 31545