GCF for 20 and 260

What is the Greatest Common Factor of 20 and 260?

Answer: GCF of 20 and 260 is 20

(Twenty)

Finding GCF for 20 and 260 using all factors (divisors) listing

The first method to find GCF for numbers 20 and 260 is to list all factors for both numbers and pick the highest common one:

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

All factors of 260: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260

So the Greatest Common Factor for 20 and 260 is 20

Finding GCF for 20 and 260 by Prime Factorization

The second method to find GCF for numbers 20 and 260 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 20: 2, 2, 5

All Prime Factors of 260: 2, 2, 5, 13

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
52605
62602
72601
82604
92601
1026010
112601
122604
1326013
142602
152605
162604
172601
182602
192601
2026020
212601
222602
232601
242604
252605
2626026
272601
282604
292601
3026010
312601
322604
332601
342602

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 20 and 260? (The answer is: 20). Select the first number (e.g. '20') and the second number (e.g. '260'). 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 20 and 260?

GCF of 20 and 260 is 20