What is the Greatest Common Factor of 28705 and 28710?

Greatest common factor (GCF) of 28705 and 28710 is 5.

GCF(28705,28710) = 5

We will now calculate the prime factors of 28705 and 28710, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28705 and 28710.

How to find the GCF of 28705 and 28710?

We will first find the prime factorization of 28705 and 28710. After we will calculate the factors of 28705 and 28710 and find the biggest common factor number .

Step-1: Prime Factorization of 28705

Prime factors of 28705 are 5, 5741. Prime factorization of 28705 in exponential form is:

28705 = 5¹ × 5741¹

Step-2: Prime Factorization of 28710

Prime factors of 28710 are 2, 3, 5, 11, 29. Prime factorization of 28710 in exponential form is:

28710 = 2¹ × 3² × 5¹ × 11¹ × 29¹

Step-3: Factors of 28705

List of positive integer factors of 28705 that divides 28705 without a remainder.

1, 5, 5741

Step-4: Factors of 28710

List of positive integer factors of 28710 that divides 28705 without a remainder.

1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 29, 30, 33, 45, 55, 58, 66, 87, 90, 99, 110, 145, 165, 174, 198, 261, 290, 319, 330, 435, 495, 522, 638, 870, 957, 990, 1305, 1595, 1914, 2610, 2871, 3190, 4785, 5742, 9570, 14355

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28705 and 28710. The biggest common factor number is the GCF number.
So the greatest common factor 28705 and 28710 is 5.

Also check out the Least Common Multiple of 28705 and 28710