What is the Greatest Common Factor of 20080 and 20090?

Greatest common factor (GCF) of 20080 and 20090 is 10.

GCF(20080,20090) = 10

We will now calculate the prime factors of 20080 and 20090, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20080 and 20090.

How to find the GCF of 20080 and 20090?

We will first find the prime factorization of 20080 and 20090. After we will calculate the factors of 20080 and 20090 and find the biggest common factor number .

Step-1: Prime Factorization of 20080

Prime factors of 20080 are 2, 5, 251. Prime factorization of 20080 in exponential form is:

20080 = 2⁴ × 5¹ × 251¹

Step-2: Prime Factorization of 20090

Prime factors of 20090 are 2, 5, 7, 41. Prime factorization of 20090 in exponential form is:

20090 = 2¹ × 5¹ × 7² × 41¹

Step-3: Factors of 20080

List of positive integer factors of 20080 that divides 20080 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 2008, 2510, 4016, 5020, 10040

Step-4: Factors of 20090

List of positive integer factors of 20090 that divides 20080 without a remainder.

1, 2, 5, 7, 10, 14, 35, 41, 49, 70, 82, 98, 205, 245, 287, 410, 490, 574, 1435, 2009, 2870, 4018, 10045

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20080 and 20090. The biggest common factor number is the GCF number.
So the greatest common factor 20080 and 20090 is 10.

Also check out the Least Common Multiple of 20080 and 20090