What is the Greatest Common Factor of 17820 and 17840?

Greatest common factor (GCF) of 17820 and 17840 is 20.

GCF(17820,17840) = 20

We will now calculate the prime factors of 17820 and 17840, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17820 and 17840.

How to find the GCF of 17820 and 17840?

We will first find the prime factorization of 17820 and 17840. After we will calculate the factors of 17820 and 17840 and find the biggest common factor number .

Step-1: Prime Factorization of 17820

Prime factors of 17820 are 2, 3, 5, 11. Prime factorization of 17820 in exponential form is:

17820 = 2² × 3⁴ × 5¹ × 11¹

Step-2: Prime Factorization of 17840

Prime factors of 17840 are 2, 5, 223. Prime factorization of 17840 in exponential form is:

17840 = 2⁴ × 5¹ × 223¹

Step-3: Factors of 17820

List of positive integer factors of 17820 that divides 17820 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 132, 135, 162, 165, 180, 198, 220, 270, 297, 324, 330, 396, 405, 495, 540, 594, 660, 810, 891, 990, 1188, 1485, 1620, 1782, 1980, 2970, 3564, 4455, 5940, 8910

Step-4: Factors of 17840

List of positive integer factors of 17840 that divides 17820 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 2230, 3568, 4460, 8920

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17820 and 17840. The biggest common factor number is the GCF number.
So the greatest common factor 17820 and 17840 is 20.

Also check out the Least Common Multiple of 17820 and 17840