What is the Greatest Common Factor of 39730 and 39742?

Greatest common factor (GCF) of 39730 and 39742 is 2.

GCF(39730,39742) = 2

We will now calculate the prime factors of 39730 and 39742, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39730 and 39742.

How to find the GCF of 39730 and 39742?

We will first find the prime factorization of 39730 and 39742. After we will calculate the factors of 39730 and 39742 and find the biggest common factor number .

Step-1: Prime Factorization of 39730

Prime factors of 39730 are 2, 5, 29, 137. Prime factorization of 39730 in exponential form is:

39730 = 2¹ × 5¹ × 29¹ × 137¹

Step-2: Prime Factorization of 39742

Prime factors of 39742 are 2, 31, 641. Prime factorization of 39742 in exponential form is:

39742 = 2¹ × 31¹ × 641¹

Step-3: Factors of 39730

List of positive integer factors of 39730 that divides 39730 without a remainder.

1, 2, 5, 10, 29, 58, 137, 145, 274, 290, 685, 1370, 3973, 7946, 19865

Step-4: Factors of 39742

List of positive integer factors of 39742 that divides 39730 without a remainder.

1, 2, 31, 62, 641, 1282, 19871

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39730 and 39742. The biggest common factor number is the GCF number.
So the greatest common factor 39730 and 39742 is 2.

Also check out the Least Common Multiple of 39730 and 39742