What is the Greatest Common Factor of 21936 and 21948?

Greatest common factor (GCF) of 21936 and 21948 is 12.

GCF(21936,21948) = 12

We will now calculate the prime factors of 21936 and 21948, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21936 and 21948.

How to find the GCF of 21936 and 21948?

We will first find the prime factorization of 21936 and 21948. After we will calculate the factors of 21936 and 21948 and find the biggest common factor number .

Step-1: Prime Factorization of 21936

Prime factors of 21936 are 2, 3, 457. Prime factorization of 21936 in exponential form is:

21936 = 2⁴ × 3¹ × 457¹

Step-2: Prime Factorization of 21948

Prime factors of 21948 are 2, 3, 31, 59. Prime factorization of 21948 in exponential form is:

21948 = 2² × 3¹ × 31¹ × 59¹

Step-3: Factors of 21936

List of positive integer factors of 21936 that divides 21936 without a remainder.

1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 457, 914, 1371, 1828, 2742, 3656, 5484, 7312, 10968

Step-4: Factors of 21948

List of positive integer factors of 21948 that divides 21936 without a remainder.

1, 2, 3, 4, 6, 12, 31, 59, 62, 93, 118, 124, 177, 186, 236, 354, 372, 708, 1829, 3658, 5487, 7316, 10974

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21936 and 21948. The biggest common factor number is the GCF number.
So the greatest common factor 21936 and 21948 is 12.

Also check out the Least Common Multiple of 21936 and 21948