What is the Greatest Common Factor of 28165 and 28180?

Greatest common factor (GCF) of 28165 and 28180 is 5.

GCF(28165,28180) = 5

We will now calculate the prime factors of 28165 and 28180, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28165 and 28180.

How to find the GCF of 28165 and 28180?

We will first find the prime factorization of 28165 and 28180. After we will calculate the factors of 28165 and 28180 and find the biggest common factor number .

Step-1: Prime Factorization of 28165

Prime factors of 28165 are 5, 43, 131. Prime factorization of 28165 in exponential form is:

28165 = 5¹ × 43¹ × 131¹

Step-2: Prime Factorization of 28180

Prime factors of 28180 are 2, 5, 1409. Prime factorization of 28180 in exponential form is:

28180 = 2² × 5¹ × 1409¹

Step-3: Factors of 28165

List of positive integer factors of 28165 that divides 28165 without a remainder.

1, 5, 43, 131, 215, 655, 5633

Step-4: Factors of 28180

List of positive integer factors of 28180 that divides 28165 without a remainder.

1, 2, 4, 5, 10, 20, 1409, 2818, 5636, 7045, 14090

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28165 and 28180. The biggest common factor number is the GCF number.
So the greatest common factor 28165 and 28180 is 5.

Also check out the Least Common Multiple of 28165 and 28180