A:
Positive:
1 x 5157227655 x 103144553131 x 3936815269 x 1917185655 x 7873631345 x 3834372927 x 17619514635 x 35239
Negative:
-1 x -515722765-5 x -103144553-131 x -3936815-269 x -1917185-655 x -787363-1345 x -383437-2927 x -176195-14635 x -35239
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 515,722,765, it is easier to work with a table - it's called factoring from the outside in.
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 | 515,722,765 | |
| -1 | -515,722,765 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 515,722,765.
Example:
1 x 515,722,765 = 515,722,765
and
-1 x -515,722,765 = 515,722,765
Notice both answers equal 515,722,765
With that explanation out of the way, let's continue. Next, we take the number 515,722,765 and divide it by 2:
515,722,765 ÷ 2 = 257,861,382.5
If the quotient is a whole number, then 2 and 257,861,382.5 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 | 515,722,765 | |
| -1 | -515,722,765 |
Now, we try dividing 515,722,765 by 3:
515,722,765 ÷ 3 = 171,907,588.3333
If the quotient is a whole number, then 3 and 171,907,588.3333 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 | 515,722,765 | |
| -1 | -515,722,765 |
Let's try dividing by 4:
515,722,765 ÷ 4 = 128,930,691.25
If the quotient is a whole number, then 4 and 128,930,691.25 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 | 515,722,765 | |
| -1 | 515,722,765 |
If you did it right, you will end up with this table:
| 1 | 5 | 131 | 269 | 655 | 1,345 | 2,927 | 14,635 | 35,239 | 176,195 | 383,437 | 787,363 | 1,917,185 | 3,936,815 | 103,144,553 | 515,722,765 |
| -1 | -5 | -131 | -269 | -655 | -1,345 | -2,927 | -14,635 | -35,239 | -176,195 | -383,437 | -787,363 | -1,917,185 | -3,936,815 | -103,144,553 | -515,722,765 |
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