GCF for 20 and 465

What is the Greatest Common Factor of 20 and 465?

Answer: GCF of 20 and 465 is 5

(Five)

Finding GCF for 20 and 465 using all factors (divisors) listing

The first method to find GCF for numbers 20 and 465 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 465: 1, 3, 5, 15, 31, 93, 155, 465

So the Greatest Common Factor for 20 and 465 is 5

Finding GCF for 20 and 465 by Prime Factorization

The second method to find GCF for numbers 20 and 465 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 465: 3, 5, 31

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 20 and 465

GCF Table

Number 1Number 2GCF
54655
64653
74651
84651
94653
104655
114651
124653
134651
144651
1546515
164651
174651
184653
194651
204655
214653
224651
234651
244653
254655
264651
274653
284651
294651
3046515
3146531
324651
334653
344651

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 465? (The answer is: 5). Select the first number (e.g. '20') and the second number (e.g. '465'). 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 465?

GCF of 20 and 465 is 5