Greatest Common Factor of 40 and 260
GCF(40, 260) = 20, Greatest common factor of 40 and 260 is 20. Greatest Common Factor or Greatest Common Divisor of two numbers is the largest integer by which both the numbers can be divided. There are two different methods to calculate Greatest Common Factor of 40 and 260. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.
Greatest Common Factor of 40 and 260 by prime factorization method
We will first find the prime factorization of 40 and 260.
Prime Factorization of 40 is 1, 2, 2, 2, 5 and Prime Factorization of 260 is 1, 2, 2, 5, 13.
- Factorize\( (40) = \) \(1\times 2\times 2\times 2\times 5\)
- Factorize\( (260) = \) \(1\times 2\times 2\times 5\times 13\)
Now we need to find any which are common for each number (1, 2, 2, 5) and multiply these numbers together.
\(GCF(40, 260) = 1\times 2\times 2\times 5 = 20\).
Greatest Common Factor of 40 and 260 by matching factors method
List of positive integers factors of 40 leaving a remainder zero is 1, 2, 4, 5, 8, 10, 20, 40
List of positive integers factors of 260 leaving a remainder zero is 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260
As you can see, 20 is the greatest and common number that 40 and 260 divides into.
So the greatest common factor 40 and 260 is 20.
\(GCF(40, 260) = 20\).
If you want to learn more about greatest common divisor, take a look at the Wikipedia page.
