What is the Greatest Common Factor of 91620 and 91640?

Greatest common factor (GCF) of 91620 and 91640 is 20.

GCF(91620,91640) = 20

We will now calculate the prime factors of 91620 and 91640, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91620 and 91640.

How to find the GCF of 91620 and 91640?

We will first find the prime factorization of 91620 and 91640. After we will calculate the factors of 91620 and 91640 and find the biggest common factor number .

Step-1: Prime Factorization of 91620

Prime factors of 91620 are 2, 3, 5, 509. Prime factorization of 91620 in exponential form is:

91620 = 2² × 3² × 5¹ × 509¹

Step-2: Prime Factorization of 91640

Prime factors of 91640 are 2, 5, 29, 79. Prime factorization of 91640 in exponential form is:

91640 = 2³ × 5¹ × 29¹ × 79¹

Step-3: Factors of 91620

List of positive integer factors of 91620 that divides 91620 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 509, 1018, 1527, 2036, 2545, 3054, 4581, 5090, 6108, 7635, 9162, 10180, 15270, 18324, 22905, 30540, 45810

Step-4: Factors of 91640

List of positive integer factors of 91640 that divides 91620 without a remainder.

1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 79, 116, 145, 158, 232, 290, 316, 395, 580, 632, 790, 1160, 1580, 2291, 3160, 4582, 9164, 11455, 18328, 22910, 45820

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91620 and 91640. The biggest common factor number is the GCF number.
So the greatest common factor 91620 and 91640 is 20.

Also check out the Least Common Multiple of 91620 and 91640