A:
Positive:
1 x 903396255 x 1806792525 x 3613585125 x 722717313 x 2886251565 x 577252309 x 391257825 x 11545
Negative:
-1 x -90339625-5 x -18067925-25 x -3613585-125 x -722717-313 x -288625-1565 x -57725-2309 x -39125-7825 x -11545
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 90,339,625, 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 | 90,339,625 | |
| -1 | -90,339,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 90,339,625.
Example:
1 x 90,339,625 = 90,339,625
and
-1 x -90,339,625 = 90,339,625
Notice both answers equal 90,339,625
With that explanation out of the way, let's continue. Next, we take the number 90,339,625 and divide it by 2:
90,339,625 ÷ 2 = 45,169,812.5
If the quotient is a whole number, then 2 and 45,169,812.5 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 | 90,339,625 | |
| -1 | -90,339,625 |
Now, we try dividing 90,339,625 by 3:
90,339,625 ÷ 3 = 30,113,208.3333
If the quotient is a whole number, then 3 and 30,113,208.3333 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 | 90,339,625 | |
| -1 | -90,339,625 |
Let's try dividing by 4:
90,339,625 ÷ 4 = 22,584,906.25
If the quotient is a whole number, then 4 and 22,584,906.25 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 | 90,339,625 | |
| -1 | 90,339,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 125 | 313 | 1,565 | 2,309 | 7,825 | 11,545 | 39,125 | 57,725 | 288,625 | 722,717 | 3,613,585 | 18,067,925 | 90,339,625 |
| -1 | -5 | -25 | -125 | -313 | -1,565 | -2,309 | -7,825 | -11,545 | -39,125 | -57,725 | -288,625 | -722,717 | -3,613,585 | -18,067,925 | -90,339,625 |
Here are some more numbers to try:
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