What is the Greatest Common Factor of 21228 and 21246?

Greatest common factor (GCF) of 21228 and 21246 is 6.

GCF(21228,21246) = 6

We will now calculate the prime factors of 21228 and 21246, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21228 and 21246.

How to find the GCF of 21228 and 21246?

We will first find the prime factorization of 21228 and 21246. After we will calculate the factors of 21228 and 21246 and find the biggest common factor number .

Step-1: Prime Factorization of 21228

Prime factors of 21228 are 2, 3, 29, 61. Prime factorization of 21228 in exponential form is:

21228 = 2² × 3¹ × 29¹ × 61¹

Step-2: Prime Factorization of 21246

Prime factors of 21246 are 2, 3, 3541. Prime factorization of 21246 in exponential form is:

21246 = 2¹ × 3¹ × 3541¹

Step-3: Factors of 21228

List of positive integer factors of 21228 that divides 21228 without a remainder.

1, 2, 3, 4, 6, 12, 29, 58, 61, 87, 116, 122, 174, 183, 244, 348, 366, 732, 1769, 3538, 5307, 7076, 10614

Step-4: Factors of 21246

List of positive integer factors of 21246 that divides 21228 without a remainder.

1, 2, 3, 6, 3541, 7082, 10623

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21228 and 21246. The biggest common factor number is the GCF number.
So the greatest common factor 21228 and 21246 is 6.

Also check out the Least Common Multiple of 21228 and 21246