GCF of 40 and 320 (Greatest Common Factor)

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

What is the Greatest Common Divisor of 40 and 320?

Answer

GCF of 40 and 320 is 40

(Forty)

Finding GCF for 40 and 320 using all factors (divisors) listing

The first method to find GCF for numbers 40 and 320 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 320: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320

So the Greatest Common Factor for 40 and 320 is 40

Finding GCF for 40 and 320 by Prime Factorization

The second method to find GCF for numbers 40 and 320 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 320: 2, 2, 2, 2, 2, 2, 5

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

Now we need to multiply them to find GCF: 2 × 2 × 2 × 5 = 40

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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 Divisor of 40 and 320? (The answer is: 40). Select the first number (e.g. '40') and the second number (e.g. '320'). 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.

"Greatest Common Factor" Calculator

Greatest Common Factor of

and

GCF Table

Number 1Number 2GCF
4022020
4024040
402455
4025010
402555
4026020
402655
402755
4028040
402855
4029010
4030020
403055
4031010
403155
4032040
403255
4033010
403355
4034020
403455
4035010
403555
403755
4039010
4040040
404055
4041010
4042020
404255

FAQ

What is the Greatest Common Divisor of 40 and 320?

GCF of 40 and 320 is 40

How to find the GCF of 40 and 320?

You can find the GCF of 40 and 320 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 40 and 320 is 40.

See Also