What is the Greatest Common Factor of 27620 and 27640?

Greatest common factor (GCF) of 27620 and 27640 is 20.

GCF(27620,27640) = 20

We will now calculate the prime factors of 27620 and 27640, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 27620 and 27640.

How to find the GCF of 27620 and 27640?

We will first find the prime factorization of 27620 and 27640. After we will calculate the factors of 27620 and 27640 and find the biggest common factor number .

Step-1: Prime Factorization of 27620

Prime factors of 27620 are 2, 5, 1381. Prime factorization of 27620 in exponential form is:

27620 = 2² × 5¹ × 1381¹

Step-2: Prime Factorization of 27640

Prime factors of 27640 are 2, 5, 691. Prime factorization of 27640 in exponential form is:

27640 = 2³ × 5¹ × 691¹

Step-3: Factors of 27620

List of positive integer factors of 27620 that divides 27620 without a remainder.

1, 2, 4, 5, 10, 20, 1381, 2762, 5524, 6905, 13810

Step-4: Factors of 27640

List of positive integer factors of 27640 that divides 27620 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 691, 1382, 2764, 3455, 5528, 6910, 13820

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 27620 and 27640. The biggest common factor number is the GCF number.
So the greatest common factor 27620 and 27640 is 20.

Also check out the Least Common Multiple of 27620 and 27640