What is the Greatest Common Factor of 18640 and 18660?

Greatest common factor (GCF) of 18640 and 18660 is 20.

GCF(18640,18660) = 20

We will now calculate the prime factors of 18640 and 18660, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18640 and 18660.

How to find the GCF of 18640 and 18660?

We will first find the prime factorization of 18640 and 18660. After we will calculate the factors of 18640 and 18660 and find the biggest common factor number .

Step-1: Prime Factorization of 18640

Prime factors of 18640 are 2, 5, 233. Prime factorization of 18640 in exponential form is:

18640 = 2⁴ × 5¹ × 233¹

Step-2: Prime Factorization of 18660

Prime factors of 18660 are 2, 3, 5, 311. Prime factorization of 18660 in exponential form is:

18660 = 2² × 3¹ × 5¹ × 311¹

Step-3: Factors of 18640

List of positive integer factors of 18640 that divides 18640 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 233, 466, 932, 1165, 1864, 2330, 3728, 4660, 9320

Step-4: Factors of 18660

List of positive integer factors of 18660 that divides 18640 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 311, 622, 933, 1244, 1555, 1866, 3110, 3732, 4665, 6220, 9330

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18640 and 18660. The biggest common factor number is the GCF number.
So the greatest common factor 18640 and 18660 is 20.

Also check out the Least Common Multiple of 18640 and 18660