GCF for 40 and 785

What is the Greatest Common Factor of 40 and 785?

Answer: GCF of 40 and 785 is 5

(Five)

Finding GCF for 40 and 785 using all factors (divisors) listing

The first method to find GCF for numbers 40 and 785 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 785: 1, 5, 157, 785

So the Greatest Common Factor for 40 and 785 is 5

Finding GCF for 40 and 785 by Prime Factorization

The second method to find GCF for numbers 40 and 785 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 785: 5, 157

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 785

GCF Table

Number 1Number 2GCF
257855
267851
277851
287851
297851
307855
317851
327851
337851
347851
357855
367851
377851
387851
397851
407855
417851
427851
437851
447851
457855
467851
477851
487851
497851
507855
517851
527851
537851
547851

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 785? (The answer is: 5). Select the first number (e.g. '40') and the second number (e.g. '785'). 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 785?

GCF of 40 and 785 is 5