What is the Greatest Common Factor of 18220 and 18240?

Greatest common factor (GCF) of 18220 and 18240 is 20.

GCF(18220,18240) = 20

We will now calculate the prime factors of 18220 and 18240, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18220 and 18240.

How to find the GCF of 18220 and 18240?

We will first find the prime factorization of 18220 and 18240. After we will calculate the factors of 18220 and 18240 and find the biggest common factor number .

Step-1: Prime Factorization of 18220

Prime factors of 18220 are 2, 5, 911. Prime factorization of 18220 in exponential form is:

18220 = 2² × 5¹ × 911¹

Step-2: Prime Factorization of 18240

Prime factors of 18240 are 2, 3, 5, 19. Prime factorization of 18240 in exponential form is:

18240 = 2⁶ × 3¹ × 5¹ × 19¹

Step-3: Factors of 18220

List of positive integer factors of 18220 that divides 18220 without a remainder.

1, 2, 4, 5, 10, 20, 911, 1822, 3644, 4555, 9110

Step-4: Factors of 18240

List of positive integer factors of 18240 that divides 18220 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 152, 160, 190, 192, 228, 240, 285, 304, 320, 380, 456, 480, 570, 608, 760, 912, 960, 1140, 1216, 1520, 1824, 2280, 3040, 3648, 4560, 6080, 9120

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18220 and 18240. The biggest common factor number is the GCF number.
So the greatest common factor 18220 and 18240 is 20.

Also check out the Least Common Multiple of 18220 and 18240