What is the Greatest Common Factor of 38820 and 38840?

Greatest common factor (GCF) of 38820 and 38840 is 20.

GCF(38820,38840) = 20

We will now calculate the prime factors of 38820 and 38840, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 38820 and 38840.

How to find the GCF of 38820 and 38840?

We will first find the prime factorization of 38820 and 38840. After we will calculate the factors of 38820 and 38840 and find the biggest common factor number .

Step-1: Prime Factorization of 38820

Prime factors of 38820 are 2, 3, 5, 647. Prime factorization of 38820 in exponential form is:

38820 = 2² × 3¹ × 5¹ × 647¹

Step-2: Prime Factorization of 38840

Prime factors of 38840 are 2, 5, 971. Prime factorization of 38840 in exponential form is:

38840 = 2³ × 5¹ × 971¹

Step-3: Factors of 38820

List of positive integer factors of 38820 that divides 38820 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 647, 1294, 1941, 2588, 3235, 3882, 6470, 7764, 9705, 12940, 19410

Step-4: Factors of 38840

List of positive integer factors of 38840 that divides 38820 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 971, 1942, 3884, 4855, 7768, 9710, 19420

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 38820 and 38840. The biggest common factor number is the GCF number.
So the greatest common factor 38820 and 38840 is 20.

Also check out the Least Common Multiple of 38820 and 38840