What is the Greatest Common Factor of 2720 and 2740?

Greatest common factor (GCF) of 2720 and 2740 is 20.

GCF(2720,2740) = 20

We will now calculate the prime factors of 2720 and 2740, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2720 and 2740.

How to find the GCF of 2720 and 2740?

We will first find the prime factorization of 2720 and 2740. After we will calculate the factors of 2720 and 2740 and find the biggest common factor number .

Step-1: Prime Factorization of 2720

Prime factors of 2720 are 2, 5, 17. Prime factorization of 2720 in exponential form is:

2720 = 2⁵ × 5¹ × 17¹

Step-2: Prime Factorization of 2740

Prime factors of 2740 are 2, 5, 137. Prime factorization of 2740 in exponential form is:

2740 = 2² × 5¹ × 137¹

Step-3: Factors of 2720

List of positive integer factors of 2720 that divides 2720 without a remainder.

1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360

Step-4: Factors of 2740

List of positive integer factors of 2740 that divides 2720 without a remainder.

1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2720 and 2740. The biggest common factor number is the GCF number.
So the greatest common factor 2720 and 2740 is 20.

Also check out the Least Common Multiple of 2720 and 2740