What is the Greatest Common Factor of 20210 and 20218?

Greatest common factor (GCF) of 20210 and 20218 is 2.

GCF(20210,20218) = 2

We will now calculate the prime factors of 20210 and 20218, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20210 and 20218.

How to find the GCF of 20210 and 20218?

We will first find the prime factorization of 20210 and 20218. After we will calculate the factors of 20210 and 20218 and find the biggest common factor number .

Step-1: Prime Factorization of 20210

Prime factors of 20210 are 2, 5, 43, 47. Prime factorization of 20210 in exponential form is:

20210 = 2¹ × 5¹ × 43¹ × 47¹

Step-2: Prime Factorization of 20218

Prime factors of 20218 are 2, 11, 919. Prime factorization of 20218 in exponential form is:

20218 = 2¹ × 11¹ × 919¹

Step-3: Factors of 20210

List of positive integer factors of 20210 that divides 20210 without a remainder.

1, 2, 5, 10, 43, 47, 86, 94, 215, 235, 430, 470, 2021, 4042, 10105

Step-4: Factors of 20218

List of positive integer factors of 20218 that divides 20210 without a remainder.

1, 2, 11, 22, 919, 1838, 10109

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20210 and 20218. The biggest common factor number is the GCF number.
So the greatest common factor 20210 and 20218 is 2.

Also check out the Least Common Multiple of 20210 and 20218