What is the Greatest Common Factor of 18920 and 18940?

Greatest common factor (GCF) of 18920 and 18940 is 20.

GCF(18920,18940) = 20

We will now calculate the prime factors of 18920 and 18940, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18920 and 18940.

How to find the GCF of 18920 and 18940?

We will first find the prime factorization of 18920 and 18940. After we will calculate the factors of 18920 and 18940 and find the biggest common factor number .

Step-1: Prime Factorization of 18920

Prime factors of 18920 are 2, 5, 11, 43. Prime factorization of 18920 in exponential form is:

18920 = 2³ × 5¹ × 11¹ × 43¹

Step-2: Prime Factorization of 18940

Prime factors of 18940 are 2, 5, 947. Prime factorization of 18940 in exponential form is:

18940 = 2² × 5¹ × 947¹

Step-3: Factors of 18920

List of positive integer factors of 18920 that divides 18920 without a remainder.

1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1720, 1892, 2365, 3784, 4730, 9460

Step-4: Factors of 18940

List of positive integer factors of 18940 that divides 18920 without a remainder.

1, 2, 4, 5, 10, 20, 947, 1894, 3788, 4735, 9470

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18920 and 18940. The biggest common factor number is the GCF number.
So the greatest common factor 18920 and 18940 is 20.

Also check out the Least Common Multiple of 18920 and 18940