What is the Greatest Common Factor of 20790 and 20804?

Greatest common factor (GCF) of 20790 and 20804 is 14.

GCF(20790,20804) = 14

We will now calculate the prime factors of 20790 and 20804, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20790 and 20804.

How to find the GCF of 20790 and 20804?

We will first find the prime factorization of 20790 and 20804. After we will calculate the factors of 20790 and 20804 and find the biggest common factor number .

Step-1: Prime Factorization of 20790

Prime factors of 20790 are 2, 3, 5, 7, 11. Prime factorization of 20790 in exponential form is:

20790 = 2¹ × 3³ × 5¹ × 7¹ × 11¹

Step-2: Prime Factorization of 20804

Prime factors of 20804 are 2, 7, 743. Prime factorization of 20804 in exponential form is:

20804 = 2² × 7¹ × 743¹

Step-3: Factors of 20790

List of positive integer factors of 20790 that divides 20790 without a remainder.

1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 27, 30, 33, 35, 42, 45, 54, 55, 63, 66, 70, 77, 90, 99, 105, 110, 126, 135, 154, 165, 189, 198, 210, 231, 270, 297, 315, 330, 378, 385, 462, 495, 594, 630, 693, 770, 945, 990, 1155, 1386, 1485, 1890, 2079, 2310, 2970, 3465, 4158, 6930, 10395

Step-4: Factors of 20804

List of positive integer factors of 20804 that divides 20790 without a remainder.

1, 2, 4, 7, 14, 28, 743, 1486, 2972, 5201, 10402

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20790 and 20804. The biggest common factor number is the GCF number.
So the greatest common factor 20790 and 20804 is 14.

Also check out the Least Common Multiple of 20790 and 20804