# Factors of 640

So you need to find the factors of 640 do you? In this quick guide we'll describe what the factors of 640 are, how you find them and list out the factor pairs of 640 for you to prove the calculation works. Let's dive in!

Want to quickly learn or show students how to find the factors of 640? Play this very quick and fun video now!

## Factors of 640 Definition

When we talk about the factors of 640, what we really mean is all of the positive and negative integers (whole numbers) that can be evenly divided into 640. If you were to take 640 and divide it by one of its factors, the answer would be another factor of 640.

Let's look at how to find all of the factors of 640 and list them out.

## How to Find the Factors of 640

We just said that a factor is a number that can be divided equally into 640. So the way you find and list all of the factors of 640 is to go through every number up to and including 640 and check which numbers result in an even quotient (which means no decimal place).

Doing this by hand for large numbers can be time consuming, but it's relatively easy for a computer program to do it. Our calculator has worked this out for you. Here are all of the factors of 640:

• 640 ÷ 1 = 640
• 640 ÷ 2 = 320
• 640 ÷ 4 = 160
• 640 ÷ 5 = 128
• 640 ÷ 8 = 80
• 640 ÷ 10 = 64
• 640 ÷ 16 = 40
• 640 ÷ 20 = 32
• 640 ÷ 32 = 20
• 640 ÷ 40 = 16
• 640 ÷ 64 = 10
• 640 ÷ 80 = 8
• 640 ÷ 128 = 5
• 640 ÷ 160 = 4
• 640 ÷ 320 = 2
• 640 ÷ 640 = 1

All of these factors can be used to divide 640 by and get a whole number. The full list of positive factors for 640 are:

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, and 640

## Negative Factors of 640

Technically, in math you can also have negative factors of 640. If you are looking to calculate the factors of a number for homework or a test, most often the teacher or exam will be looking for specifically positive numbers.

However, we can just flip the positive numbers into negatives and those negative numbers would also be factors of 640:

-1, -2, -4, -5, -8, -10, -16, -20, -32, -40, -64, -80, -128, -160, -320, and -640

## How Many Factors of 640 Are There?

As we can see from the calculations above there are a total of 16 positive factors for 640 and 16 negative factors for 640 for a total of 32 factors for the number 640.

There are 16 positive factors of 640 and 16 negative factors of 640. Wht are there negative numbers that can be a factor of 640?

## Factor Pairs of 640

A factor pair is a combination of two factors which can be multiplied together to equal 640. For 640, all of the possible factor pairs are listed below:

• 1 x 640 = 640
• 2 x 320 = 640
• 4 x 160 = 640
• 5 x 128 = 640
• 8 x 80 = 640
• 10 x 64 = 640
• 16 x 40 = 640
• 20 x 32 = 640

We have also written a guide that goes into a little more detail about the factor pairs for 640 in case you are interested!

Just like before, we can also list out all of the negative factor pairs for 640:

• -1 x -640 = 640
• -2 x -320 = 640
• -4 x -160 = 640
• -5 x -128 = 640
• -8 x -80 = 640
• -10 x -64 = 640
• -16 x -40 = 640
• -20 x -32 = 640

Notice in the negative factor pairs that because we are multiplying a minus with a minus, the result is a positive number.

So there you have it. A complete guide to the factors of 640. You should now have the knowledge and skills to go out and calculate your own factors and factor pairs for any number you like.

Feel free to try the calculator below to check another number or, if you're feeling fancy, grab a pencil and paper and try and do it by hand. Just make sure to pick small numbers!

If you found this content useful in your research, please do us a great favor and use the tool below to make sure you properly reference us wherever you use it. We really appreciate your support!

• "Factors of 640". VisualFractions.com. Accessed on December 6, 2021. http://visualfractions.com/calculator/factors/factors-of-640/.

• "Factors of 640". VisualFractions.com, http://visualfractions.com/calculator/factors/factors-of-640/. Accessed 6 December, 2021.