GCF for 80 and 580

What is the Greatest Common Factor of 80 and 580?

Answer: GCF of 80 and 580 is 20

(Twenty)

Finding GCF for 80 and 580 using all factors (divisors) listing

The first method to find GCF for numbers 80 and 580 is to list all factors for both numbers and pick the highest common one:

All factors of 80: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

All factors of 580: 1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580

So the Greatest Common Factor for 80 and 580 is 20

Finding GCF for 80 and 580 by Prime Factorization

The second method to find GCF for numbers 80 and 580 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 80: 2, 2, 2, 2, 5

All Prime Factors of 580: 2, 2, 5, 29

As we can see there are Prime Factors common to both numbers: 2, 2, 5

Now we need to multiply them to find GCF: 2 × 2 × 5 = 20

GCF Table

Number 1Number 2GCF
655805
665802
675801
685804
695801
7058010
715801
725804
735801
745802
755805
765804
775801
785802
795801
8058020
815801
825802
835801
845804
855805
865802
8758029
885804
895801
9058010
915801
925804
935801
945802

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 80 and 580? (The answer is: 20). Select the first number (e.g. '80') and the second number (e.g. '580'). 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 80 and 580?

GCF of 80 and 580 is 20