What is the Greatest Common Factor of 31800 and 31815?

Greatest common factor (GCF) of 31800 and 31815 is 15.

GCF(31800,31815) = 15

We will now calculate the prime factors of 31800 and 31815, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31800 and 31815.

How to find the GCF of 31800 and 31815?

We will first find the prime factorization of 31800 and 31815. After we will calculate the factors of 31800 and 31815 and find the biggest common factor number .

Step-1: Prime Factorization of 31800

Prime factors of 31800 are 2, 3, 5, 53. Prime factorization of 31800 in exponential form is:

31800 = 2³ × 3¹ × 5² × 53¹

Step-2: Prime Factorization of 31815

Prime factors of 31815 are 3, 5, 7, 101. Prime factorization of 31815 in exponential form is:

31815 = 3² × 5¹ × 7¹ × 101¹

Step-3: Factors of 31800

List of positive integer factors of 31800 that divides 31800 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 53, 60, 75, 100, 106, 120, 150, 159, 200, 212, 265, 300, 318, 424, 530, 600, 636, 795, 1060, 1272, 1325, 1590, 2120, 2650, 3180, 3975, 5300, 6360, 7950, 10600, 15900

Step-4: Factors of 31815

List of positive integer factors of 31815 that divides 31800 without a remainder.

1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 101, 105, 303, 315, 505, 707, 909, 1515, 2121, 3535, 4545, 6363, 10605

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31800 and 31815. The biggest common factor number is the GCF number.
So the greatest common factor 31800 and 31815 is 15.

Also check out the Least Common Multiple of 31800 and 31815