What is the Greatest Common Factor of 40215 and 40220?

Greatest common factor (GCF) of 40215 and 40220 is 5.

GCF(40215,40220) = 5

We will now calculate the prime factors of 40215 and 40220, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 40215 and 40220.

How to find the GCF of 40215 and 40220?

We will first find the prime factorization of 40215 and 40220. After we will calculate the factors of 40215 and 40220 and find the biggest common factor number .

Step-1: Prime Factorization of 40215

Prime factors of 40215 are 3, 5, 7, 383. Prime factorization of 40215 in exponential form is:

40215 = 3¹ × 5¹ × 7¹ × 383¹

Step-2: Prime Factorization of 40220

Prime factors of 40220 are 2, 5, 2011. Prime factorization of 40220 in exponential form is:

40220 = 2² × 5¹ × 2011¹

Step-3: Factors of 40215

List of positive integer factors of 40215 that divides 40215 without a remainder.

1, 3, 5, 7, 15, 21, 35, 105, 383, 1149, 1915, 2681, 5745, 8043, 13405

Step-4: Factors of 40220

List of positive integer factors of 40220 that divides 40215 without a remainder.

1, 2, 4, 5, 10, 20, 2011, 4022, 8044, 10055, 20110

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 40215 and 40220. The biggest common factor number is the GCF number.
So the greatest common factor 40215 and 40220 is 5.

Also check out the Least Common Multiple of 40215 and 40220