Q: What are the factor combinations of the number 918,355?

 A:
Positive:   1 x 9183555 x 18367161 x 15055305 x 3011
Negative: -1 x -918355-5 x -183671-61 x -15055-305 x -3011


How do I find the factor combinations of the number 918,355?

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 918,355, 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.

1 918,355
-1 -918,355

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 918,355.

Example:
1 x 918,355 = 918,355
and
-1 x -918,355 = 918,355
Notice both answers equal 918,355

With that explanation out of the way, let's continue. Next, we take the number 918,355 and divide it by 2:

918,355 ÷ 2 = 459,177.5

If the quotient is a whole number, then 2 and 459,177.5 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:

1 918,355
-1 -918,355

Now, we try dividing 918,355 by 3:

918,355 ÷ 3 = 306,118.3333

If the quotient is a whole number, then 3 and 306,118.3333 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:

1 918,355
-1 -918,355

Let's try dividing by 4:

918,355 ÷ 4 = 229,588.75

If the quotient is a whole number, then 4 and 229,588.75 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:

1 918,355
-1 918,355
Keep dividing by the next highest number until you cannot divide anymore.

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

15613053,01115,055183,671918,355
-1-5-61-305-3,011-15,055-183,671-918,355

More Examples

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