What is the Greatest Common Factor of 28131 and 28140?

Greatest common factor (GCF) of 28131 and 28140 is 3.

GCF(28131,28140) = 3

We will now calculate the prime factors of 28131 and 28140, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28131 and 28140.

How to find the GCF of 28131 and 28140?

We will first find the prime factorization of 28131 and 28140. After we will calculate the factors of 28131 and 28140 and find the biggest common factor number .

Step-1: Prime Factorization of 28131

Prime factors of 28131 are 3, 9377. Prime factorization of 28131 in exponential form is:

28131 = 3¹ × 9377¹

Step-2: Prime Factorization of 28140

Prime factors of 28140 are 2, 3, 5, 7, 67. Prime factorization of 28140 in exponential form is:

28140 = 2² × 3¹ × 5¹ × 7¹ × 67¹

Step-3: Factors of 28131

List of positive integer factors of 28131 that divides 28131 without a remainder.

1, 3, 9377

Step-4: Factors of 28140

List of positive integer factors of 28140 that divides 28131 without a remainder.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 67, 70, 84, 105, 134, 140, 201, 210, 268, 335, 402, 420, 469, 670, 804, 938, 1005, 1340, 1407, 1876, 2010, 2345, 2814, 4020, 4690, 5628, 7035, 9380, 14070

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28131 and 28140. The biggest common factor number is the GCF number.
So the greatest common factor 28131 and 28140 is 3.

Also check out the Least Common Multiple of 28131 and 28140