A:
Positive:
1 x 178152555 x 356305119 x 93764595 x 187529277 x 64315677 x 263151385 x 128633385 x 5263
Negative:
-1 x -17815255-5 x -3563051-19 x -937645-95 x -187529-277 x -64315-677 x -26315-1385 x -12863-3385 x -5263
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 17,815,255, 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 | 17,815,255 | |
| -1 | -17,815,255 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 17,815,255.
Example:
1 x 17,815,255 = 17,815,255
and
-1 x -17,815,255 = 17,815,255
Notice both answers equal 17,815,255
With that explanation out of the way, let's continue. Next, we take the number 17,815,255 and divide it by 2:
17,815,255 ÷ 2 = 8,907,627.5
If the quotient is a whole number, then 2 and 8,907,627.5 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 | 17,815,255 | |
| -1 | -17,815,255 |
Now, we try dividing 17,815,255 by 3:
17,815,255 ÷ 3 = 5,938,418.3333
If the quotient is a whole number, then 3 and 5,938,418.3333 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 | 17,815,255 | |
| -1 | -17,815,255 |
Let's try dividing by 4:
17,815,255 ÷ 4 = 4,453,813.75
If the quotient is a whole number, then 4 and 4,453,813.75 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 | 17,815,255 | |
| -1 | 17,815,255 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 277 | 677 | 1,385 | 3,385 | 5,263 | 12,863 | 26,315 | 64,315 | 187,529 | 937,645 | 3,563,051 | 17,815,255 |
| -1 | -5 | -19 | -95 | -277 | -677 | -1,385 | -3,385 | -5,263 | -12,863 | -26,315 | -64,315 | -187,529 | -937,645 | -3,563,051 | -17,815,255 |
Here are some more numbers to try:
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