Q: What are the factor combinations of the number 307,853?

 A:
Positive:   1 x 3078537 x 4397913 x 2368117 x 1810991 x 3383119 x 2587199 x 1547221 x 1393
Negative: -1 x -307853-7 x -43979-13 x -23681-17 x -18109-91 x -3383-119 x -2587-199 x -1547-221 x -1393


How do I find the factor combinations of the number 307,853?

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 307,853, 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.

1 307,853
-1 -307,853

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 307,853.

Example:
1 x 307,853 = 307,853
and
-1 x -307,853 = 307,853
Notice both answers equal 307,853

With that explanation out of the way, let's continue. Next, we take the number 307,853 and divide it by 2:

307,853 ÷ 2 = 153,926.5

If the quotient is a whole number, then 2 and 153,926.5 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:

1 307,853
-1 -307,853

Now, we try dividing 307,853 by 3:

307,853 ÷ 3 = 102,617.6667

If the quotient is a whole number, then 3 and 102,617.6667 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:

1 307,853
-1 -307,853

Let's try dividing by 4:

307,853 ÷ 4 = 76,963.25

If the quotient is a whole number, then 4 and 76,963.25 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:

1 307,853
-1 307,853
Keep dividing by the next highest number until you cannot divide anymore.

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

171317911191992211,3931,5472,5873,38318,10923,68143,979307,853
-1-7-13-17-91-119-199-221-1,393-1,547-2,587-3,383-18,109-23,681-43,979-307,853

More Examples

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