What is the Greatest Common Factor of 28558 and 28570?

Greatest common factor (GCF) of 28558 and 28570 is 2.

GCF(28558,28570) = 2

We will now calculate the prime factors of 28558 and 28570, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28558 and 28570.

How to find the GCF of 28558 and 28570?

We will first find the prime factorization of 28558 and 28570. After we will calculate the factors of 28558 and 28570 and find the biggest common factor number .

Step-1: Prime Factorization of 28558

Prime factors of 28558 are 2, 109, 131. Prime factorization of 28558 in exponential form is:

28558 = 2¹ × 109¹ × 131¹

Step-2: Prime Factorization of 28570

Prime factors of 28570 are 2, 5, 2857. Prime factorization of 28570 in exponential form is:

28570 = 2¹ × 5¹ × 2857¹

Step-3: Factors of 28558

List of positive integer factors of 28558 that divides 28558 without a remainder.

1, 2, 109, 131, 218, 262, 14279

Step-4: Factors of 28570

List of positive integer factors of 28570 that divides 28558 without a remainder.

1, 2, 5, 10, 2857, 5714, 14285

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28558 and 28570. The biggest common factor number is the GCF number.
So the greatest common factor 28558 and 28570 is 2.

Also check out the Least Common Multiple of 28558 and 28570