GCF for 40 and 265

What is the Greatest Common Factor of 40 and 265?

Answer: GCF of 40 and 265 is 5

(Five)

Finding GCF for 40 and 265 using all factors (divisors) listing

The first method to find GCF for numbers 40 and 265 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 265: 1, 5, 53, 265

So the Greatest Common Factor for 40 and 265 is 5

Finding GCF for 40 and 265 by Prime Factorization

The second method to find GCF for numbers 40 and 265 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 265: 5, 53

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 265

GCF Table

Number 1Number 2GCF
252655
262651
272651
282651
292651
302655
312651
322651
332651
342651
352655
362651
372651
382651
392651
402655
412651
422651
432651
442651
452655
462651
472651
482651
492651
502655
512651
522651
5326553
542651

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 Factor of 40 and 265? (The answer is: 5). Select the first number (e.g. '40') and the second number (e.g. '265'). 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

FAQ

What is the Greatest Common Factor of 40 and 265?

GCF of 40 and 265 is 5