What is the Greatest Common Factor of 42220 and 42228?

Greatest common factor (GCF) of 42220 and 42228 is 4.

GCF(42220,42228) = 4

We will now calculate the prime factors of 42220 and 42228, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42220 and 42228.

How to find the GCF of 42220 and 42228?

We will first find the prime factorization of 42220 and 42228. After we will calculate the factors of 42220 and 42228 and find the biggest common factor number .

Step-1: Prime Factorization of 42220

Prime factors of 42220 are 2, 5, 2111. Prime factorization of 42220 in exponential form is:

42220 = 2² × 5¹ × 2111¹

Step-2: Prime Factorization of 42228

Prime factors of 42228 are 2, 3, 17, 23. Prime factorization of 42228 in exponential form is:

42228 = 2² × 3³ × 17¹ × 23¹

Step-3: Factors of 42220

List of positive integer factors of 42220 that divides 42220 without a remainder.

1, 2, 4, 5, 10, 20, 2111, 4222, 8444, 10555, 21110

Step-4: Factors of 42228

List of positive integer factors of 42228 that divides 42220 without a remainder.

1, 2, 3, 4, 6, 9, 12, 17, 18, 23, 27, 34, 36, 46, 51, 54, 68, 69, 92, 102, 108, 138, 153, 204, 207, 276, 306, 391, 414, 459, 612, 621, 782, 828, 918, 1173, 1242, 1564, 1836, 2346, 2484, 3519, 4692, 7038, 10557, 14076, 21114

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42220 and 42228. The biggest common factor number is the GCF number.
So the greatest common factor 42220 and 42228 is 4.

Also check out the Least Common Multiple of 42220 and 42228