A:
Positive:
1 x 186256255 x 372512517 x 109562525 x 74502585 x 219125125 x 149005425 x 43825625 x 298011753 x 106252125 x 8765
Negative:
-1 x -18625625-5 x -3725125-17 x -1095625-25 x -745025-85 x -219125-125 x -149005-425 x -43825-625 x -29801-1753 x -10625-2125 x -8765
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 18,625,625, 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 | 18,625,625 | |
| -1 | -18,625,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,625,625.
Example:
1 x 18,625,625 = 18,625,625
and
-1 x -18,625,625 = 18,625,625
Notice both answers equal 18,625,625
With that explanation out of the way, let's continue. Next, we take the number 18,625,625 and divide it by 2:
18,625,625 ÷ 2 = 9,312,812.5
If the quotient is a whole number, then 2 and 9,312,812.5 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 | 18,625,625 | |
| -1 | -18,625,625 |
Now, we try dividing 18,625,625 by 3:
18,625,625 ÷ 3 = 6,208,541.6667
If the quotient is a whole number, then 3 and 6,208,541.6667 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 | 18,625,625 | |
| -1 | -18,625,625 |
Let's try dividing by 4:
18,625,625 ÷ 4 = 4,656,406.25
If the quotient is a whole number, then 4 and 4,656,406.25 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 | 18,625,625 | |
| -1 | 18,625,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 25 | 85 | 125 | 425 | 625 | 1,753 | 2,125 | 8,765 | 10,625 | 29,801 | 43,825 | 149,005 | 219,125 | 745,025 | 1,095,625 | 3,725,125 | 18,625,625 |
| -1 | -5 | -17 | -25 | -85 | -125 | -425 | -625 | -1,753 | -2,125 | -8,765 | -10,625 | -29,801 | -43,825 | -149,005 | -219,125 | -745,025 | -1,095,625 | -3,725,125 | -18,625,625 |
Here are some more numbers to try:
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