Q: What are the factor combinations of the number 788,359?

 A:
Positive:   1 x 78835911 x 7166913 x 6064337 x 21307143 x 5513149 x 5291407 x 1937481 x 1639
Negative: -1 x -788359-11 x -71669-13 x -60643-37 x -21307-143 x -5513-149 x -5291-407 x -1937-481 x -1639


How do I find the factor combinations of the number 788,359?

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 788,359, 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.

1 788,359
-1 -788,359

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 788,359.

Example:
1 x 788,359 = 788,359
and
-1 x -788,359 = 788,359
Notice both answers equal 788,359

With that explanation out of the way, let's continue. Next, we take the number 788,359 and divide it by 2:

788,359 ÷ 2 = 394,179.5

If the quotient is a whole number, then 2 and 394,179.5 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:

1 788,359
-1 -788,359

Now, we try dividing 788,359 by 3:

788,359 ÷ 3 = 262,786.3333

If the quotient is a whole number, then 3 and 262,786.3333 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:

1 788,359
-1 -788,359

Let's try dividing by 4:

788,359 ÷ 4 = 197,089.75

If the quotient is a whole number, then 4 and 197,089.75 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:

1 788,359
-1 788,359
Keep dividing by the next highest number until you cannot divide anymore.

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

11113371431494074811,6391,9375,2915,51321,30760,64371,669788,359
-1-11-13-37-143-149-407-481-1,639-1,937-5,291-5,513-21,307-60,643-71,669-788,359

More Examples

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