What is the Greatest Common Factor of 28191 and 28206?

Greatest common factor (GCF) of 28191 and 28206 is 3.

GCF(28191,28206) = 3

We will now calculate the prime factors of 28191 and 28206, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28191 and 28206.

How to find the GCF of 28191 and 28206?

We will first find the prime factorization of 28191 and 28206. After we will calculate the factors of 28191 and 28206 and find the biggest common factor number .

Step-1: Prime Factorization of 28191

Prime factors of 28191 are 3, 9397. Prime factorization of 28191 in exponential form is:

28191 = 3¹ × 9397¹

Step-2: Prime Factorization of 28206

Prime factors of 28206 are 2, 3, 1567. Prime factorization of 28206 in exponential form is:

28206 = 2¹ × 3² × 1567¹

Step-3: Factors of 28191

List of positive integer factors of 28191 that divides 28191 without a remainder.

1, 3, 9397

Step-4: Factors of 28206

List of positive integer factors of 28206 that divides 28191 without a remainder.

1, 2, 3, 6, 9, 18, 1567, 3134, 4701, 9402, 14103

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28191 and 28206. The biggest common factor number is the GCF number.
So the greatest common factor 28191 and 28206 is 3.

Also check out the Least Common Multiple of 28191 and 28206