What is the Greatest Common Factor of 91620 and 91638?

Greatest common factor (GCF) of 91620 and 91638 is 18.

GCF(91620,91638) = 18

We will now calculate the prime factors of 91620 and 91638, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91620 and 91638.

How to find the GCF of 91620 and 91638?

We will first find the prime factorization of 91620 and 91638. After we will calculate the factors of 91620 and 91638 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 91638

Prime factors of 91638 are 2, 3, 1697. Prime factorization of 91638 in exponential form is:

91638 = 2¹ × 3³ × 1697¹

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 91638

List of positive integer factors of 91638 that divides 91620 without a remainder.

1, 2, 3, 6, 9, 18, 27, 54, 1697, 3394, 5091, 10182, 15273, 30546, 45819

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91620 and 91638. The biggest common factor number is the GCF number.
So the greatest common factor 91620 and 91638 is 18.

Also check out the Least Common Multiple of 91620 and 91638