What is the Greatest Common Factor of 81716 and 81728?

Greatest common factor (GCF) of 81716 and 81728 is 4.

GCF(81716,81728) = 4

We will now calculate the prime factors of 81716 and 81728, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81716 and 81728.

How to find the GCF of 81716 and 81728?

We will first find the prime factorization of 81716 and 81728. After we will calculate the factors of 81716 and 81728 and find the biggest common factor number .

Step-1: Prime Factorization of 81716

Prime factors of 81716 are 2, 31, 659. Prime factorization of 81716 in exponential form is:

81716 = 2² × 31¹ × 659¹

Step-2: Prime Factorization of 81728

Prime factors of 81728 are 2, 1277. Prime factorization of 81728 in exponential form is:

81728 = 2⁶ × 1277¹

Step-3: Factors of 81716

List of positive integer factors of 81716 that divides 81716 without a remainder.

1, 2, 4, 31, 62, 124, 659, 1318, 2636, 20429, 40858

Step-4: Factors of 81728

List of positive integer factors of 81728 that divides 81716 without a remainder.

1, 2, 4, 8, 16, 32, 64, 1277, 2554, 5108, 10216, 20432, 40864

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81716 and 81728. The biggest common factor number is the GCF number.
So the greatest common factor 81716 and 81728 is 4.

Also check out the Least Common Multiple of 81716 and 81728