What is the Greatest Common Factor of 81630 and 81638?

Greatest common factor (GCF) of 81630 and 81638 is 2.

GCF(81630,81638) = 2

We will now calculate the prime factors of 81630 and 81638, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81630 and 81638.

How to find the GCF of 81630 and 81638?

We will first find the prime factorization of 81630 and 81638. After we will calculate the factors of 81630 and 81638 and find the biggest common factor number .

Step-1: Prime Factorization of 81630

Prime factors of 81630 are 2, 3, 5, 907. Prime factorization of 81630 in exponential form is:

81630 = 2¹ × 3² × 5¹ × 907¹

Step-2: Prime Factorization of 81638

Prime factors of 81638 are 2, 40819. Prime factorization of 81638 in exponential form is:

81638 = 2¹ × 40819¹

Step-3: Factors of 81630

List of positive integer factors of 81630 that divides 81630 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 907, 1814, 2721, 4535, 5442, 8163, 9070, 13605, 16326, 27210, 40815

Step-4: Factors of 81638

List of positive integer factors of 81638 that divides 81630 without a remainder.

1, 2, 40819

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81630 and 81638. The biggest common factor number is the GCF number.
So the greatest common factor 81630 and 81638 is 2.

Also check out the Least Common Multiple of 81630 and 81638