Q: What are the factor combinations of the number 396,097?

 A:
Positive:   1 x 39609713 x 30469
Negative: -1 x -396097-13 x -30469


How do I find the factor combinations of the number 396,097?

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 396,097, 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.

1 396,097
-1 -396,097

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 396,097.

Example:
1 x 396,097 = 396,097
and
-1 x -396,097 = 396,097
Notice both answers equal 396,097

With that explanation out of the way, let's continue. Next, we take the number 396,097 and divide it by 2:

396,097 ÷ 2 = 198,048.5

If the quotient is a whole number, then 2 and 198,048.5 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:

1 396,097
-1 -396,097

Now, we try dividing 396,097 by 3:

396,097 ÷ 3 = 132,032.3333

If the quotient is a whole number, then 3 and 132,032.3333 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:

1 396,097
-1 -396,097

Let's try dividing by 4:

396,097 ÷ 4 = 99,024.25

If the quotient is a whole number, then 4 and 99,024.25 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:

1 396,097
-1 396,097
Keep dividing by the next highest number until you cannot divide anymore.

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

11330,469396,097
-1-13-30,469-396,097

More Examples

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