What is the Greatest Common Factor of 20721 and 20731?

Greatest common factor (GCF) of 20721 and 20731 is 1.

GCF(20721,20731) = 1

We will now calculate the prime factors of 20721 and 20731, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20721 and 20731.

How to find the GCF of 20721 and 20731?

We will first find the prime factorization of 20721 and 20731. After we will calculate the factors of 20721 and 20731 and find the biggest common factor number .

Step-1: Prime Factorization of 20721

Prime factors of 20721 are 3, 6907. Prime factorization of 20721 in exponential form is:

20721 = 3¹ × 6907¹

Step-2: Prime Factorization of 20731

Prime factors of 20731 are 20731. Prime factorization of 20731 in exponential form is:

20731 = 20731¹

Step-3: Factors of 20721

List of positive integer factors of 20721 that divides 20721 without a remainder.

1, 3, 6907

Step-4: Factors of 20731

List of positive integer factors of 20731 that divides 20721 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20721 and 20731. The biggest common factor number is the GCF number.
So the greatest common factor 20721 and 20731 is 1.

Also check out the Least Common Multiple of 20721 and 20731