What is the Greatest Common Factor of 19866 and 19882?

Greatest common factor (GCF) of 19866 and 19882 is 2.

GCF(19866,19882) = 2

We will now calculate the prime factors of 19866 and 19882, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19866 and 19882.

How to find the GCF of 19866 and 19882?

We will first find the prime factorization of 19866 and 19882. After we will calculate the factors of 19866 and 19882 and find the biggest common factor number .

Step-1: Prime Factorization of 19866

Prime factors of 19866 are 2, 3, 7, 11, 43. Prime factorization of 19866 in exponential form is:

19866 = 2¹ × 3¹ × 7¹ × 11¹ × 43¹

Step-2: Prime Factorization of 19882

Prime factors of 19882 are 2, 9941. Prime factorization of 19882 in exponential form is:

19882 = 2¹ × 9941¹

Step-3: Factors of 19866

List of positive integer factors of 19866 that divides 19866 without a remainder.

1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 43, 66, 77, 86, 129, 154, 231, 258, 301, 462, 473, 602, 903, 946, 1419, 1806, 2838, 3311, 6622, 9933

Step-4: Factors of 19882

List of positive integer factors of 19882 that divides 19866 without a remainder.

1, 2, 9941

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19866 and 19882. The biggest common factor number is the GCF number.
So the greatest common factor 19866 and 19882 is 2.

Also check out the Least Common Multiple of 19866 and 19882