What is the Greatest Common Factor of 20457 and 20472?

Greatest common factor (GCF) of 20457 and 20472 is 3.

GCF(20457,20472) = 3

We will now calculate the prime factors of 20457 and 20472, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20457 and 20472.

How to find the GCF of 20457 and 20472?

We will first find the prime factorization of 20457 and 20472. After we will calculate the factors of 20457 and 20472 and find the biggest common factor number .

Step-1: Prime Factorization of 20457

Prime factors of 20457 are 3, 2273. Prime factorization of 20457 in exponential form is:

20457 = 3² × 2273¹

Step-2: Prime Factorization of 20472

Prime factors of 20472 are 2, 3, 853. Prime factorization of 20472 in exponential form is:

20472 = 2³ × 3¹ × 853¹

Step-3: Factors of 20457

List of positive integer factors of 20457 that divides 20457 without a remainder.

1, 3, 9, 2273, 6819

Step-4: Factors of 20472

List of positive integer factors of 20472 that divides 20457 without a remainder.

1, 2, 3, 4, 6, 8, 12, 24, 853, 1706, 2559, 3412, 5118, 6824, 10236

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20457 and 20472. The biggest common factor number is the GCF number.
So the greatest common factor 20457 and 20472 is 3.

Also check out the Least Common Multiple of 20457 and 20472