What is the Greatest Common Factor of 39428 and 39438?

Greatest common factor (GCF) of 39428 and 39438 is 2.

GCF(39428,39438) = 2

We will now calculate the prime factors of 39428 and 39438, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39428 and 39438.

How to find the GCF of 39428 and 39438?

We will first find the prime factorization of 39428 and 39438. After we will calculate the factors of 39428 and 39438 and find the biggest common factor number .

Step-1: Prime Factorization of 39428

Prime factors of 39428 are 2, 9857. Prime factorization of 39428 in exponential form is:

39428 = 2² × 9857¹

Step-2: Prime Factorization of 39438

Prime factors of 39438 are 2, 3, 7, 313. Prime factorization of 39438 in exponential form is:

39438 = 2¹ × 3² × 7¹ × 313¹

Step-3: Factors of 39428

List of positive integer factors of 39428 that divides 39428 without a remainder.

1, 2, 4, 9857, 19714

Step-4: Factors of 39438

List of positive integer factors of 39438 that divides 39428 without a remainder.

1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 313, 626, 939, 1878, 2191, 2817, 4382, 5634, 6573, 13146, 19719

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39428 and 39438. The biggest common factor number is the GCF number.
So the greatest common factor 39428 and 39438 is 2.

Also check out the Least Common Multiple of 39428 and 39438