What is the Greatest Common Factor of 39740 and 39745?

Greatest common factor (GCF) of 39740 and 39745 is 5.

GCF(39740,39745) = 5

We will now calculate the prime factors of 39740 and 39745, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39740 and 39745.

How to find the GCF of 39740 and 39745?

We will first find the prime factorization of 39740 and 39745. After we will calculate the factors of 39740 and 39745 and find the biggest common factor number .

Step-1: Prime Factorization of 39740

Prime factors of 39740 are 2, 5, 1987. Prime factorization of 39740 in exponential form is:

39740 = 2² × 5¹ × 1987¹

Step-2: Prime Factorization of 39745

Prime factors of 39745 are 5, 7949. Prime factorization of 39745 in exponential form is:

39745 = 5¹ × 7949¹

Step-3: Factors of 39740

List of positive integer factors of 39740 that divides 39740 without a remainder.

1, 2, 4, 5, 10, 20, 1987, 3974, 7948, 9935, 19870

Step-4: Factors of 39745

List of positive integer factors of 39745 that divides 39740 without a remainder.

1, 5, 7949

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39740 and 39745. The biggest common factor number is the GCF number.
So the greatest common factor 39740 and 39745 is 5.

Also check out the Least Common Multiple of 39740 and 39745