What is the Greatest Common Factor of 20436 and 20456?

Greatest common factor (GCF) of 20436 and 20456 is 4.

GCF(20436,20456) = 4

We will now calculate the prime factors of 20436 and 20456, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20436 and 20456.

How to find the GCF of 20436 and 20456?

We will first find the prime factorization of 20436 and 20456. After we will calculate the factors of 20436 and 20456 and find the biggest common factor number .

Step-1: Prime Factorization of 20436

Prime factors of 20436 are 2, 3, 13, 131. Prime factorization of 20436 in exponential form is:

20436 = 2² × 3¹ × 13¹ × 131¹

Step-2: Prime Factorization of 20456

Prime factors of 20456 are 2, 2557. Prime factorization of 20456 in exponential form is:

20456 = 2³ × 2557¹

Step-3: Factors of 20436

List of positive integer factors of 20436 that divides 20436 without a remainder.

1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 131, 156, 262, 393, 524, 786, 1572, 1703, 3406, 5109, 6812, 10218

Step-4: Factors of 20456

List of positive integer factors of 20456 that divides 20436 without a remainder.

1, 2, 4, 8, 2557, 5114, 10228

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20436 and 20456. The biggest common factor number is the GCF number.
So the greatest common factor 20436 and 20456 is 4.

Also check out the Least Common Multiple of 20436 and 20456