What is the Greatest Common Factor of 21186 and 21206?

Greatest common factor (GCF) of 21186 and 21206 is 2.

GCF(21186,21206) = 2

We will now calculate the prime factors of 21186 and 21206, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21186 and 21206.

How to find the GCF of 21186 and 21206?

We will first find the prime factorization of 21186 and 21206. After we will calculate the factors of 21186 and 21206 and find the biggest common factor number .

Step-1: Prime Factorization of 21186

Prime factors of 21186 are 2, 3, 11, 107. Prime factorization of 21186 in exponential form is:

21186 = 2¹ × 3² × 11¹ × 107¹

Step-2: Prime Factorization of 21206

Prime factors of 21206 are 2, 23, 461. Prime factorization of 21206 in exponential form is:

21206 = 2¹ × 23¹ × 461¹

Step-3: Factors of 21186

List of positive integer factors of 21186 that divides 21186 without a remainder.

1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 107, 198, 214, 321, 642, 963, 1177, 1926, 2354, 3531, 7062, 10593

Step-4: Factors of 21206

List of positive integer factors of 21206 that divides 21186 without a remainder.

1, 2, 23, 46, 461, 922, 10603

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21186 and 21206. The biggest common factor number is the GCF number.
So the greatest common factor 21186 and 21206 is 2.

Also check out the Least Common Multiple of 21186 and 21206