What is the Greatest Common Factor of 91720 and 91740?

Greatest common factor (GCF) of 91720 and 91740 is 20.

GCF(91720,91740) = 20

We will now calculate the prime factors of 91720 and 91740, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91720 and 91740.

How to find the GCF of 91720 and 91740?

We will first find the prime factorization of 91720 and 91740. After we will calculate the factors of 91720 and 91740 and find the biggest common factor number .

Step-1: Prime Factorization of 91720

Prime factors of 91720 are 2, 5, 2293. Prime factorization of 91720 in exponential form is:

91720 = 2³ × 5¹ × 2293¹

Step-2: Prime Factorization of 91740

Prime factors of 91740 are 2, 3, 5, 11, 139. Prime factorization of 91740 in exponential form is:

91740 = 2² × 3¹ × 5¹ × 11¹ × 139¹

Step-3: Factors of 91720

List of positive integer factors of 91720 that divides 91720 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 2293, 4586, 9172, 11465, 18344, 22930, 45860

Step-4: Factors of 91740

List of positive integer factors of 91740 that divides 91720 without a remainder.

1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 139, 165, 220, 278, 330, 417, 556, 660, 695, 834, 1390, 1529, 1668, 2085, 2780, 3058, 4170, 4587, 6116, 7645, 8340, 9174, 15290, 18348, 22935, 30580, 45870

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91720 and 91740. The biggest common factor number is the GCF number.
So the greatest common factor 91720 and 91740 is 20.

Also check out the Least Common Multiple of 91720 and 91740