What is the Greatest Common Factor of 81731 and 81744?

Greatest common factor (GCF) of 81731 and 81744 is 13.

GCF(81731,81744) = 13

We will now calculate the prime factors of 81731 and 81744, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81731 and 81744.

How to find the GCF of 81731 and 81744?

We will first find the prime factorization of 81731 and 81744. After we will calculate the factors of 81731 and 81744 and find the biggest common factor number .

Step-1: Prime Factorization of 81731

Prime factors of 81731 are 13, 6287. Prime factorization of 81731 in exponential form is:

81731 = 13¹ × 6287¹

Step-2: Prime Factorization of 81744

Prime factors of 81744 are 2, 3, 13, 131. Prime factorization of 81744 in exponential form is:

81744 = 2⁴ × 3¹ × 13¹ × 131¹

Step-3: Factors of 81731

List of positive integer factors of 81731 that divides 81731 without a remainder.

1, 13, 6287

Step-4: Factors of 81744

List of positive integer factors of 81744 that divides 81731 without a remainder.

1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 131, 156, 208, 262, 312, 393, 524, 624, 786, 1048, 1572, 1703, 2096, 3144, 3406, 5109, 6288, 6812, 10218, 13624, 20436, 27248, 40872

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81731 and 81744. The biggest common factor number is the GCF number.
So the greatest common factor 81731 and 81744 is 13.

Also check out the Least Common Multiple of 81731 and 81744