A:
Positive:
1 x 255517555 x 511035129 x 881095145 x 176219313 x 81635563 x 453851565 x 163272815 x 9077
Negative:
-1 x -25551755-5 x -5110351-29 x -881095-145 x -176219-313 x -81635-563 x -45385-1565 x -16327-2815 x -9077
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 25,551,755, 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 | 25,551,755 | |
| -1 | -25,551,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,551,755.
Example:
1 x 25,551,755 = 25,551,755
and
-1 x -25,551,755 = 25,551,755
Notice both answers equal 25,551,755
With that explanation out of the way, let's continue. Next, we take the number 25,551,755 and divide it by 2:
25,551,755 ÷ 2 = 12,775,877.5
If the quotient is a whole number, then 2 and 12,775,877.5 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 | 25,551,755 | |
| -1 | -25,551,755 |
Now, we try dividing 25,551,755 by 3:
25,551,755 ÷ 3 = 8,517,251.6667
If the quotient is a whole number, then 3 and 8,517,251.6667 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 | 25,551,755 | |
| -1 | -25,551,755 |
Let's try dividing by 4:
25,551,755 ÷ 4 = 6,387,938.75
If the quotient is a whole number, then 4 and 6,387,938.75 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 | 25,551,755 | |
| -1 | 25,551,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 145 | 313 | 563 | 1,565 | 2,815 | 9,077 | 16,327 | 45,385 | 81,635 | 176,219 | 881,095 | 5,110,351 | 25,551,755 |
| -1 | -5 | -29 | -145 | -313 | -563 | -1,565 | -2,815 | -9,077 | -16,327 | -45,385 | -81,635 | -176,219 | -881,095 | -5,110,351 | -25,551,755 |
Here are some more numbers to try:
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