Q: What are the factor combinations of the number 156,108?

 A:
Positive:   1 x 1561082 x 780543 x 520364 x 390276 x 2601812 x 13009
Negative: -1 x -156108-2 x -78054-3 x -52036-4 x -39027-6 x -26018-12 x -13009


How do I find the factor combinations of the number 156,108?

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 156,108, 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.

1 156,108
-1 -156,108

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 156,108.

Example:
1 x 156,108 = 156,108
and
-1 x -156,108 = 156,108
Notice both answers equal 156,108

With that explanation out of the way, let's continue. Next, we take the number 156,108 and divide it by 2:

156,108 ÷ 2 = 78,054

If the quotient is a whole number, then 2 and 78,054 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

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

1 2 78,054 156,108
-1 -2 -78,054 -156,108

Now, we try dividing 156,108 by 3:

156,108 ÷ 3 = 52,036

If the quotient is a whole number, then 3 and 52,036 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

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

1 2 3 52,036 78,054 156,108
-1 -2 -3 -52,036 -78,054 -156,108

Let's try dividing by 4:

156,108 ÷ 4 = 39,027

If the quotient is a whole number, then 4 and 39,027 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

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

1 2 3 4 39,027 52,036 78,054 156,108
-1 -2 -3 -4 -39,027 -52,036 -78,054 156,108
Keep dividing by the next highest number until you cannot divide anymore.

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

123461213,00926,01839,02752,03678,054156,108
-1-2-3-4-6-12-13,009-26,018-39,027-52,036-78,054-156,108

More Examples

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