What is the Greatest Common Factor of 39620 and 39638?

Greatest common factor (GCF) of 39620 and 39638 is 2.

GCF(39620,39638) = 2

We will now calculate the prime factors of 39620 and 39638, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39620 and 39638.

How to find the GCF of 39620 and 39638?

We will first find the prime factorization of 39620 and 39638. After we will calculate the factors of 39620 and 39638 and find the biggest common factor number .

Step-1: Prime Factorization of 39620

Prime factors of 39620 are 2, 5, 7, 283. Prime factorization of 39620 in exponential form is:

39620 = 2² × 5¹ × 7¹ × 283¹

Step-2: Prime Factorization of 39638

Prime factors of 39638 are 2, 19819. Prime factorization of 39638 in exponential form is:

39638 = 2¹ × 19819¹

Step-3: Factors of 39620

List of positive integer factors of 39620 that divides 39620 without a remainder.

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 283, 566, 1132, 1415, 1981, 2830, 3962, 5660, 7924, 9905, 19810

Step-4: Factors of 39638

List of positive integer factors of 39638 that divides 39620 without a remainder.

1, 2, 19819

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39620 and 39638. The biggest common factor number is the GCF number.
So the greatest common factor 39620 and 39638 is 2.

Also check out the Least Common Multiple of 39620 and 39638