Q: What are the factor combinations of the number 873,587?

 A:
Positive:   1 x 87358711 x 7941713 x 6719941 x 21307143 x 6109149 x 5863451 x 1937533 x 1639
Negative: -1 x -873587-11 x -79417-13 x -67199-41 x -21307-143 x -6109-149 x -5863-451 x -1937-533 x -1639


How do I find the factor combinations of the number 873,587?

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 873,587, 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.

1 873,587
-1 -873,587

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 873,587.

Example:
1 x 873,587 = 873,587
and
-1 x -873,587 = 873,587
Notice both answers equal 873,587

With that explanation out of the way, let's continue. Next, we take the number 873,587 and divide it by 2:

873,587 ÷ 2 = 436,793.5

If the quotient is a whole number, then 2 and 436,793.5 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:

1 873,587
-1 -873,587

Now, we try dividing 873,587 by 3:

873,587 ÷ 3 = 291,195.6667

If the quotient is a whole number, then 3 and 291,195.6667 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:

1 873,587
-1 -873,587

Let's try dividing by 4:

873,587 ÷ 4 = 218,396.75

If the quotient is a whole number, then 4 and 218,396.75 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:

1 873,587
-1 873,587
Keep dividing by the next highest number until you cannot divide anymore.

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

11113411431494515331,6391,9375,8636,10921,30767,19979,417873,587
-1-11-13-41-143-149-451-533-1,639-1,937-5,863-6,109-21,307-67,199-79,417-873,587

More Examples

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