# Factors of 990

So you need to find the factors of 990 do you? In this quick guide we'll describe what the factors of 990 are, how you find them and list out the factor pairs of 990 for you to prove the calculation works. Let's dive in!

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## Factors of 990 Definition

When we talk about the factors of 990, what we really mean is all of the positive and negative integers (whole numbers) that can be evenly divided into 990. If you were to take 990 and divide it by one of its factors, the answer would be another factor of 990.

Let's look at how to find all of the factors of 990 and list them out.

## How to Find the Factors of 990

We just said that a factor is a number that can be divided equally into 990. So the way you find and list all of the factors of 990 is to go through every number up to and including 990 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 990:

- 990 ÷ 1 = 990
- 990 ÷ 2 = 495
- 990 ÷ 3 = 330
- 990 ÷ 5 = 198
- 990 ÷ 6 = 165
- 990 ÷ 9 = 110
- 990 ÷ 10 = 99
- 990 ÷ 11 = 90
- 990 ÷ 15 = 66
- 990 ÷ 18 = 55
- 990 ÷ 22 = 45
- 990 ÷ 30 = 33
- 990 ÷ 33 = 30
- 990 ÷ 45 = 22
- 990 ÷ 55 = 18
- 990 ÷ 66 = 15
- 990 ÷ 90 = 11
- 990 ÷ 99 = 10
- 990 ÷ 110 = 9
- 990 ÷ 165 = 6
- 990 ÷ 198 = 5
- 990 ÷ 330 = 3
- 990 ÷ 495 = 2
- 990 ÷ 990 = 1

All of these factors can be used to divide 990 by and get a whole number. The full list of positive factors for 990 are:

1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, and 990

## Negative Factors of 990

Technically, in math you can also have negative factors of 990. 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 990:

-1, -2, -3, -5, -6, -9, -10, -11, -15, -18, -22, -30, -33, -45, -55, -66, -90, -99, -110, -165, -198, -330, -495, and -990

## How Many Factors of 990 Are There?

As we can see from the calculations above there are a total of 24 positive factors for 990 and 24 negative factors for 990 for a total of 48 factors for the number 990.

There are 24 positive factors of 990 and 24 negative factors of 990. Wht are there negative numbers that can be a factor of 990?

## Factor Pairs of 990

A factor pair is a combination of two factors which can be multiplied together to equal 990. For 990, all of the possible factor pairs are listed below:

- 1 x 990 = 990
- 2 x 495 = 990
- 3 x 330 = 990
- 5 x 198 = 990
- 6 x 165 = 990
- 9 x 110 = 990
- 10 x 99 = 990
- 11 x 90 = 990
- 15 x 66 = 990
- 18 x 55 = 990
- 22 x 45 = 990
- 30 x 33 = 990

We have also written a guide that goes into a little more detail about the factor pairs for 990 in case you are interested!

Just like before, we can also list out all of the negative factor pairs for 990:

- -1 x -990 = 990
- -2 x -495 = 990
- -3 x -330 = 990
- -5 x -198 = 990
- -6 x -165 = 990
- -9 x -110 = 990
- -10 x -99 = 990
- -11 x -90 = 990
- -15 x -66 = 990
- -18 x -55 = 990
- -22 x -45 = 990
- -30 x -33 = 990

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 990. 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!

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