What is the Greatest Common Factor of 20506 and 20516?

Greatest common factor (GCF) of 20506 and 20516 is 2.

GCF(20506,20516) = 2

We will now calculate the prime factors of 20506 and 20516, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20506 and 20516.

How to find the GCF of 20506 and 20516?

We will first find the prime factorization of 20506 and 20516. After we will calculate the factors of 20506 and 20516 and find the biggest common factor number .

Step-1: Prime Factorization of 20506

Prime factors of 20506 are 2, 10253. Prime factorization of 20506 in exponential form is:

20506 = 2¹ × 10253¹

Step-2: Prime Factorization of 20516

Prime factors of 20516 are 2, 23, 223. Prime factorization of 20516 in exponential form is:

20516 = 2² × 23¹ × 223¹

Step-3: Factors of 20506

List of positive integer factors of 20506 that divides 20506 without a remainder.

1, 2, 10253

Step-4: Factors of 20516

List of positive integer factors of 20516 that divides 20506 without a remainder.

1, 2, 4, 23, 46, 92, 223, 446, 892, 5129, 10258

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20506 and 20516. The biggest common factor number is the GCF number.
So the greatest common factor 20506 and 20516 is 2.

Also check out the Least Common Multiple of 20506 and 20516