What is the Greatest Common Factor of 19938 and 19956?

Greatest common factor (GCF) of 19938 and 19956 is 6.

GCF(19938,19956) = 6

We will now calculate the prime factors of 19938 and 19956, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19938 and 19956.

How to find the GCF of 19938 and 19956?

We will first find the prime factorization of 19938 and 19956. After we will calculate the factors of 19938 and 19956 and find the biggest common factor number .

Step-1: Prime Factorization of 19938

Prime factors of 19938 are 2, 3, 3323. Prime factorization of 19938 in exponential form is:

19938 = 2¹ × 3¹ × 3323¹

Step-2: Prime Factorization of 19956

Prime factors of 19956 are 2, 3, 1663. Prime factorization of 19956 in exponential form is:

19956 = 2² × 3¹ × 1663¹

Step-3: Factors of 19938

List of positive integer factors of 19938 that divides 19938 without a remainder.

1, 2, 3, 6, 3323, 6646, 9969

Step-4: Factors of 19956

List of positive integer factors of 19956 that divides 19938 without a remainder.

1, 2, 3, 4, 6, 12, 1663, 3326, 4989, 6652, 9978

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19938 and 19956. The biggest common factor number is the GCF number.
So the greatest common factor 19938 and 19956 is 6.

Also check out the Least Common Multiple of 19938 and 19956