What is the Greatest Common Factor of 22420 and 22440?

Greatest common factor (GCF) of 22420 and 22440 is 20.

GCF(22420,22440) = 20

We will now calculate the prime factors of 22420 and 22440, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 22420 and 22440.

How to find the GCF of 22420 and 22440?

We will first find the prime factorization of 22420 and 22440. After we will calculate the factors of 22420 and 22440 and find the biggest common factor number .

Step-1: Prime Factorization of 22420

Prime factors of 22420 are 2, 5, 19, 59. Prime factorization of 22420 in exponential form is:

22420 = 2² × 5¹ × 19¹ × 59¹

Step-2: Prime Factorization of 22440

Prime factors of 22440 are 2, 3, 5, 11, 17. Prime factorization of 22440 in exponential form is:

22440 = 2³ × 3¹ × 5¹ × 11¹ × 17¹

Step-3: Factors of 22420

List of positive integer factors of 22420 that divides 22420 without a remainder.

1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 590, 1121, 1180, 2242, 4484, 5605, 11210

Step-4: Factors of 22440

List of positive integer factors of 22440 that divides 22420 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 17, 20, 22, 24, 30, 33, 34, 40, 44, 51, 55, 60, 66, 68, 85, 88, 102, 110, 120, 132, 136, 165, 170, 187, 204, 220, 255, 264, 330, 340, 374, 408, 440, 510, 561, 660, 680, 748, 935, 1020, 1122, 1320, 1496, 1870, 2040, 2244, 2805, 3740, 4488, 5610, 7480, 11220

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 22420 and 22440. The biggest common factor number is the GCF number.
So the greatest common factor 22420 and 22440 is 20.

Also check out the Least Common Multiple of 22420 and 22440