What is the Greatest Common Factor of 20438 and 20444?

Greatest common factor (GCF) of 20438 and 20444 is 2.

GCF(20438,20444) = 2

We will now calculate the prime factors of 20438 and 20444, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20438 and 20444.

How to find the GCF of 20438 and 20444?

We will first find the prime factorization of 20438 and 20444. After we will calculate the factors of 20438 and 20444 and find the biggest common factor number .

Step-1: Prime Factorization of 20438

Prime factors of 20438 are 2, 11, 929. Prime factorization of 20438 in exponential form is:

20438 = 2¹ × 11¹ × 929¹

Step-2: Prime Factorization of 20444

Prime factors of 20444 are 2, 19, 269. Prime factorization of 20444 in exponential form is:

20444 = 2² × 19¹ × 269¹

Step-3: Factors of 20438

List of positive integer factors of 20438 that divides 20438 without a remainder.

1, 2, 11, 22, 929, 1858, 10219

Step-4: Factors of 20444

List of positive integer factors of 20444 that divides 20438 without a remainder.

1, 2, 4, 19, 38, 76, 269, 538, 1076, 5111, 10222

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20438 and 20444. The biggest common factor number is the GCF number.
So the greatest common factor 20438 and 20444 is 2.

Also check out the Least Common Multiple of 20438 and 20444