What is the Greatest Common Factor of 17420 and 17428?

Greatest common factor (GCF) of 17420 and 17428 is 4.

GCF(17420,17428) = 4

We will now calculate the prime factors of 17420 and 17428, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17420 and 17428.

How to find the GCF of 17420 and 17428?

We will first find the prime factorization of 17420 and 17428. After we will calculate the factors of 17420 and 17428 and find the biggest common factor number .

Step-1: Prime Factorization of 17420

Prime factors of 17420 are 2, 5, 13, 67. Prime factorization of 17420 in exponential form is:

17420 = 2² × 5¹ × 13¹ × 67¹

Step-2: Prime Factorization of 17428

Prime factors of 17428 are 2, 4357. Prime factorization of 17428 in exponential form is:

17428 = 2² × 4357¹

Step-3: Factors of 17420

List of positive integer factors of 17420 that divides 17420 without a remainder.

1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 670, 871, 1340, 1742, 3484, 4355, 8710

Step-4: Factors of 17428

List of positive integer factors of 17428 that divides 17420 without a remainder.

1, 2, 4, 4357, 8714

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17420 and 17428. The biggest common factor number is the GCF number.
So the greatest common factor 17420 and 17428 is 4.

Also check out the Least Common Multiple of 17420 and 17428