Q: What are the factor combinations of the number 87,953?

 A:
Positive:   1 x 87953281 x 313
Negative: -1 x -87953-281 x -313


How do I find the factor combinations of the number 87,953?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 87,953, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 87,953
-1 -87,953

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,953.

Example:
1 x 87,953 = 87,953
and
-1 x -87,953 = 87,953
Notice both answers equal 87,953

With that explanation out of the way, let's continue. Next, we take the number 87,953 and divide it by 2:

87,953 ÷ 2 = 43,976.5

If the quotient is a whole number, then 2 and 43,976.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 87,953
-1 -87,953

Now, we try dividing 87,953 by 3:

87,953 ÷ 3 = 29,317.6667

If the quotient is a whole number, then 3 and 29,317.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 87,953
-1 -87,953

Let's try dividing by 4:

87,953 ÷ 4 = 21,988.25

If the quotient is a whole number, then 4 and 21,988.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 87,953
-1 87,953
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

128131387,953
-1-281-313-87,953

More Examples

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