What is the Greatest Common Factor of 28808 and 28821?

Greatest common factor (GCF) of 28808 and 28821 is 13.

GCF(28808,28821) = 13

We will now calculate the prime factors of 28808 and 28821, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28808 and 28821.

How to find the GCF of 28808 and 28821?

We will first find the prime factorization of 28808 and 28821. After we will calculate the factors of 28808 and 28821 and find the biggest common factor number .

Step-1: Prime Factorization of 28808

Prime factors of 28808 are 2, 13, 277. Prime factorization of 28808 in exponential form is:

28808 = 2³ × 13¹ × 277¹

Step-2: Prime Factorization of 28821

Prime factors of 28821 are 3, 13, 739. Prime factorization of 28821 in exponential form is:

28821 = 3¹ × 13¹ × 739¹

Step-3: Factors of 28808

List of positive integer factors of 28808 that divides 28808 without a remainder.

1, 2, 4, 8, 13, 26, 52, 104, 277, 554, 1108, 2216, 3601, 7202, 14404

Step-4: Factors of 28821

List of positive integer factors of 28821 that divides 28808 without a remainder.

1, 3, 13, 39, 739, 2217, 9607

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28808 and 28821. The biggest common factor number is the GCF number.
So the greatest common factor 28808 and 28821 is 13.

Also check out the Least Common Multiple of 28808 and 28821