What is the Greatest Common Factor of 20836 and 20842?

Greatest common factor (GCF) of 20836 and 20842 is 2.

GCF(20836,20842) = 2

We will now calculate the prime factors of 20836 and 20842, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20836 and 20842.

How to find the GCF of 20836 and 20842?

We will first find the prime factorization of 20836 and 20842. After we will calculate the factors of 20836 and 20842 and find the biggest common factor number .

Step-1: Prime Factorization of 20836

Prime factors of 20836 are 2, 5209. Prime factorization of 20836 in exponential form is:

20836 = 2² × 5209¹

Step-2: Prime Factorization of 20842

Prime factors of 20842 are 2, 17, 613. Prime factorization of 20842 in exponential form is:

20842 = 2¹ × 17¹ × 613¹

Step-3: Factors of 20836

List of positive integer factors of 20836 that divides 20836 without a remainder.

1, 2, 4, 5209, 10418

Step-4: Factors of 20842

List of positive integer factors of 20842 that divides 20836 without a remainder.

1, 2, 17, 34, 613, 1226, 10421

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20836 and 20842. The biggest common factor number is the GCF number.
So the greatest common factor 20836 and 20842 is 2.

Also check out the Least Common Multiple of 20836 and 20842