Q: What are the factor combinations of the number 318,492?

 A:
Positive:   1 x 3184922 x 1592463 x 1061644 x 796236 x 530829 x 3538812 x 2654118 x 1769427 x 1179636 x 884754 x 589881 x 3932108 x 2949162 x 1966324 x 983
Negative: -1 x -318492-2 x -159246-3 x -106164-4 x -79623-6 x -53082-9 x -35388-12 x -26541-18 x -17694-27 x -11796-36 x -8847-54 x -5898-81 x -3932-108 x -2949-162 x -1966-324 x -983


How do I find the factor combinations of the number 318,492?

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 318,492, 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.

1 318,492
-1 -318,492

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 318,492.

Example:
1 x 318,492 = 318,492
and
-1 x -318,492 = 318,492
Notice both answers equal 318,492

With that explanation out of the way, let's continue. Next, we take the number 318,492 and divide it by 2:

318,492 ÷ 2 = 159,246

If the quotient is a whole number, then 2 and 159,246 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 2 159,246 318,492
-1 -2 -159,246 -318,492

Now, we try dividing 318,492 by 3:

318,492 ÷ 3 = 106,164

If the quotient is a whole number, then 3 and 106,164 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 3 106,164 159,246 318,492
-1 -2 -3 -106,164 -159,246 -318,492

Let's try dividing by 4:

318,492 ÷ 4 = 79,623

If the quotient is a whole number, then 4 and 79,623 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 79,623 106,164 159,246 318,492
-1 -2 -3 -4 -79,623 -106,164 -159,246 318,492
Keep dividing by the next highest number until you cannot divide anymore.

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

1234691218273654811081623249831,9662,9493,9325,8988,84711,79617,69426,54135,38853,08279,623106,164159,246318,492
-1-2-3-4-6-9-12-18-27-36-54-81-108-162-324-983-1,966-2,949-3,932-5,898-8,847-11,796-17,694-26,541-35,388-53,082-79,623-106,164-159,246-318,492

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