What is the Greatest Common Factor of 20570 and 20580?

Greatest common factor (GCF) of 20570 and 20580 is 10.

GCF(20570,20580) = 10

We will now calculate the prime factors of 20570 and 20580, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20570 and 20580.

How to find the GCF of 20570 and 20580?

We will first find the prime factorization of 20570 and 20580. After we will calculate the factors of 20570 and 20580 and find the biggest common factor number .

Step-1: Prime Factorization of 20570

Prime factors of 20570 are 2, 5, 11, 17. Prime factorization of 20570 in exponential form is:

20570 = 2¹ × 5¹ × 11² × 17¹

Step-2: Prime Factorization of 20580

Prime factors of 20580 are 2, 3, 5, 7. Prime factorization of 20580 in exponential form is:

20580 = 2² × 3¹ × 5¹ × 7³

Step-3: Factors of 20570

List of positive integer factors of 20570 that divides 20570 without a remainder.

1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 121, 170, 187, 242, 374, 605, 935, 1210, 1870, 2057, 4114, 10285

Step-4: Factors of 20580

List of positive integer factors of 20580 that divides 20570 without a remainder.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 343, 420, 490, 588, 686, 735, 980, 1029, 1372, 1470, 1715, 2058, 2940, 3430, 4116, 5145, 6860, 10290

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20570 and 20580. The biggest common factor number is the GCF number.
So the greatest common factor 20570 and 20580 is 10.

Also check out the Least Common Multiple of 20570 and 20580