What is the Greatest Common Factor of 20946 and 20956?

Greatest common factor (GCF) of 20946 and 20956 is 2.

GCF(20946,20956) = 2

We will now calculate the prime factors of 20946 and 20956, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20946 and 20956.

How to find the GCF of 20946 and 20956?

We will first find the prime factorization of 20946 and 20956. After we will calculate the factors of 20946 and 20956 and find the biggest common factor number .

Step-1: Prime Factorization of 20946

Prime factors of 20946 are 2, 3, 3491. Prime factorization of 20946 in exponential form is:

20946 = 2¹ × 3¹ × 3491¹

Step-2: Prime Factorization of 20956

Prime factors of 20956 are 2, 13, 31. Prime factorization of 20956 in exponential form is:

20956 = 2² × 13² × 31¹

Step-3: Factors of 20946

List of positive integer factors of 20946 that divides 20946 without a remainder.

1, 2, 3, 6, 3491, 6982, 10473

Step-4: Factors of 20956

List of positive integer factors of 20956 that divides 20946 without a remainder.

1, 2, 4, 13, 26, 31, 52, 62, 124, 169, 338, 403, 676, 806, 1612, 5239, 10478

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20946 and 20956. The biggest common factor number is the GCF number.
So the greatest common factor 20946 and 20956 is 2.

Also check out the Least Common Multiple of 20946 and 20956