What is the Greatest Common Factor of 39774 and 39781?

Greatest common factor (GCF) of 39774 and 39781 is 7.

GCF(39774,39781) = 7

We will now calculate the prime factors of 39774 and 39781, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39774 and 39781.

How to find the GCF of 39774 and 39781?

We will first find the prime factorization of 39774 and 39781. After we will calculate the factors of 39774 and 39781 and find the biggest common factor number .

Step-1: Prime Factorization of 39774

Prime factors of 39774 are 2, 3, 7, 947. Prime factorization of 39774 in exponential form is:

39774 = 2¹ × 3¹ × 7¹ × 947¹

Step-2: Prime Factorization of 39781

Prime factors of 39781 are 7, 5683. Prime factorization of 39781 in exponential form is:

39781 = 7¹ × 5683¹

Step-3: Factors of 39774

List of positive integer factors of 39774 that divides 39774 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42, 947, 1894, 2841, 5682, 6629, 13258, 19887

Step-4: Factors of 39781

List of positive integer factors of 39781 that divides 39774 without a remainder.

1, 7, 5683

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39774 and 39781. The biggest common factor number is the GCF number.
So the greatest common factor 39774 and 39781 is 7.

Also check out the Least Common Multiple of 39774 and 39781