Q: What are the factor combinations of the number 316,417?

 A:
Positive:   1 x 31641731 x 1020759 x 5363173 x 1829
Negative: -1 x -316417-31 x -10207-59 x -5363-173 x -1829


How do I find the factor combinations of the number 316,417?

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 316,417, 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.

1 316,417
-1 -316,417

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 316,417.

Example:
1 x 316,417 = 316,417
and
-1 x -316,417 = 316,417
Notice both answers equal 316,417

With that explanation out of the way, let's continue. Next, we take the number 316,417 and divide it by 2:

316,417 ÷ 2 = 158,208.5

If the quotient is a whole number, then 2 and 158,208.5 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:

1 316,417
-1 -316,417

Now, we try dividing 316,417 by 3:

316,417 ÷ 3 = 105,472.3333

If the quotient is a whole number, then 3 and 105,472.3333 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:

1 316,417
-1 -316,417

Let's try dividing by 4:

316,417 ÷ 4 = 79,104.25

If the quotient is a whole number, then 4 and 79,104.25 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:

1 316,417
-1 316,417
Keep dividing by the next highest number until you cannot divide anymore.

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

131591731,8295,36310,207316,417
-1-31-59-173-1,829-5,363-10,207-316,417

More Examples

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