What is the Greatest Common Factor of 43640 and 43646?

Greatest common factor (GCF) of 43640 and 43646 is 2.

GCF(43640,43646) = 2

We will now calculate the prime factors of 43640 and 43646, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 43640 and 43646.

How to find the GCF of 43640 and 43646?

We will first find the prime factorization of 43640 and 43646. After we will calculate the factors of 43640 and 43646 and find the biggest common factor number .

Step-1: Prime Factorization of 43640

Prime factors of 43640 are 2, 5, 1091. Prime factorization of 43640 in exponential form is:

43640 = 2³ × 5¹ × 1091¹

Step-2: Prime Factorization of 43646

Prime factors of 43646 are 2, 139, 157. Prime factorization of 43646 in exponential form is:

43646 = 2¹ × 139¹ × 157¹

Step-3: Factors of 43640

List of positive integer factors of 43640 that divides 43640 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 1091, 2182, 4364, 5455, 8728, 10910, 21820

Step-4: Factors of 43646

List of positive integer factors of 43646 that divides 43640 without a remainder.

1, 2, 139, 157, 278, 314, 21823

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 43640 and 43646. The biggest common factor number is the GCF number.
So the greatest common factor 43640 and 43646 is 2.

Also check out the Least Common Multiple of 43640 and 43646