GCF for 40 and 165

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest Common Divisor of 40 and 165?

Answer

GCF of 40 and 165 is 5

(Five)

Finding GCF for 40 and 165 using all factors (divisors) listing

The first method to find GCF for numbers 40 and 165 is to list all factors for both numbers and pick the highest common one:

All factors of 40: 1, 2, 4, 5, 8, 10, 20, 40

All factors of 165: 1, 3, 5, 11, 15, 33, 55, 165

So the Greatest Common Factor for 40 and 165 is 5

Finding GCF for 40 and 165 by Prime Factorization

The second method to find GCF for numbers 40 and 165 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 40: 2, 2, 2, 5

All Prime Factors of 165: 3, 5, 11

As we can see there is only one Prime Factor common to both numbers. It is 5

So 5 is the Greatest Common Factor of 40 and 165

Related Calculations

See Also

About "Greatest Common Factor" Calculator

This calculator will help you find the greatest common factor (GCF) of two numbers. For example, it can help you find out what is the Greatest Common Divisor of 40 and 165? (The answer is: 5). Select the first number (e.g. '40') and the second number (e.g. '165'). After that hit the 'Calculate' button.
Greatest Common Factor (GCF) also known as the Greatest Common Divisor (GCD) or Highest Common Factor (HCF) - it is the largest positive integer that divides each of the integers with zero remainder.

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

GCF Table

Number 1Number 2GCF
251655
261651
271653
281651
291651
3016515
311651
321651
3316533
341651
351655
361653
371651
381651
391653
401655
411651
421653
431651
4416511
4516515
461651
471651
481653
491651
501655
511653
521651
531651
541653

FAQ

What is the Greatest Common Divisor of 40 and 165?

GCF of 40 and 165 is 5

How to find the GCF of 40 and 165?

You can find the GCF of 40 and 165 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 40 and 165 is 5.

See Also