Q: What are the factor combinations of the number 68,585?

 A:
Positive:   1 x 685855 x 1371711 x 623529 x 236543 x 159555 x 1247145 x 473215 x 319
Negative: -1 x -68585-5 x -13717-11 x -6235-29 x -2365-43 x -1595-55 x -1247-145 x -473-215 x -319


How do I find the factor combinations of the number 68,585?

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 68,585, 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 68,585
-1 -68,585

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 68,585.

Example:
1 x 68,585 = 68,585
and
-1 x -68,585 = 68,585
Notice both answers equal 68,585

With that explanation out of the way, let's continue. Next, we take the number 68,585 and divide it by 2:

68,585 ÷ 2 = 34,292.5

If the quotient is a whole number, then 2 and 34,292.5 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 68,585
-1 -68,585

Now, we try dividing 68,585 by 3:

68,585 ÷ 3 = 22,861.6667

If the quotient is a whole number, then 3 and 22,861.6667 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 68,585
-1 -68,585

Let's try dividing by 4:

68,585 ÷ 4 = 17,146.25

If the quotient is a whole number, then 4 and 17,146.25 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 68,585
-1 68,585
Keep dividing by the next highest number until you cannot divide anymore.

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

15112943551452153194731,2471,5952,3656,23513,71768,585
-1-5-11-29-43-55-145-215-319-473-1,247-1,595-2,365-6,235-13,717-68,585

More Examples

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