What is the Greatest Common Factor of 21948 and 21968?

Greatest common factor (GCF) of 21948 and 21968 is 4.

GCF(21948,21968) = 4

We will now calculate the prime factors of 21948 and 21968, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21948 and 21968.

How to find the GCF of 21948 and 21968?

We will first find the prime factorization of 21948 and 21968. After we will calculate the factors of 21948 and 21968 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 21968

Prime factors of 21968 are 2, 1373. Prime factorization of 21968 in exponential form is:

21968 = 2⁴ × 1373¹

Step-3: Factors of 21948

List of positive integer factors of 21948 that divides 21948 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

Step-4: Factors of 21968

List of positive integer factors of 21968 that divides 21948 without a remainder.

1, 2, 4, 8, 16, 1373, 2746, 5492, 10984

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21948 and 21968. The biggest common factor number is the GCF number.
So the greatest common factor 21948 and 21968 is 4.

Also check out the Least Common Multiple of 21948 and 21968