Q: What are the factor combinations of the number 877,098?

 A:
Positive:   1 x 8770982 x 4385493 x 2923666 x 14618317 x 5159434 x 2579751 x 17198102 x 8599
Negative: -1 x -877098-2 x -438549-3 x -292366-6 x -146183-17 x -51594-34 x -25797-51 x -17198-102 x -8599


How do I find the factor combinations of the number 877,098?

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 877,098, 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.

1 877,098
-1 -877,098

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 877,098.

Example:
1 x 877,098 = 877,098
and
-1 x -877,098 = 877,098
Notice both answers equal 877,098

With that explanation out of the way, let's continue. Next, we take the number 877,098 and divide it by 2:

877,098 ÷ 2 = 438,549

If the quotient is a whole number, then 2 and 438,549 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 2 438,549 877,098
-1 -2 -438,549 -877,098

Now, we try dividing 877,098 by 3:

877,098 ÷ 3 = 292,366

If the quotient is a whole number, then 3 and 292,366 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 3 292,366 438,549 877,098
-1 -2 -3 -292,366 -438,549 -877,098

Let's try dividing by 4:

877,098 ÷ 4 = 219,274.5

If the quotient is a whole number, then 4 and 219,274.5 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 2 3 292,366 438,549 877,098
-1 -2 -3 -292,366 -438,549 877,098
Keep dividing by the next highest number until you cannot divide anymore.

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

12361734511028,59917,19825,79751,594146,183292,366438,549877,098
-1-2-3-6-17-34-51-102-8,599-17,198-25,797-51,594-146,183-292,366-438,549-877,098

More Examples

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