A:
Positive:
1 x 180126255 x 360252525 x 72050529 x 621125125 x 144101145 x 124225725 x 248453625 x 4969
Negative:
-1 x -18012625-5 x -3602525-25 x -720505-29 x -621125-125 x -144101-145 x -124225-725 x -24845-3625 x -4969
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 18,012,625, 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 | 18,012,625 | |
| -1 | -18,012,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,012,625.
Example:
1 x 18,012,625 = 18,012,625
and
-1 x -18,012,625 = 18,012,625
Notice both answers equal 18,012,625
With that explanation out of the way, let's continue. Next, we take the number 18,012,625 and divide it by 2:
18,012,625 ÷ 2 = 9,006,312.5
If the quotient is a whole number, then 2 and 9,006,312.5 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 | 18,012,625 | |
| -1 | -18,012,625 |
Now, we try dividing 18,012,625 by 3:
18,012,625 ÷ 3 = 6,004,208.3333
If the quotient is a whole number, then 3 and 6,004,208.3333 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 | 18,012,625 | |
| -1 | -18,012,625 |
Let's try dividing by 4:
18,012,625 ÷ 4 = 4,503,156.25
If the quotient is a whole number, then 4 and 4,503,156.25 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 | 18,012,625 | |
| -1 | 18,012,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 29 | 125 | 145 | 725 | 3,625 | 4,969 | 24,845 | 124,225 | 144,101 | 621,125 | 720,505 | 3,602,525 | 18,012,625 |
| -1 | -5 | -25 | -29 | -125 | -145 | -725 | -3,625 | -4,969 | -24,845 | -124,225 | -144,101 | -621,125 | -720,505 | -3,602,525 | -18,012,625 |
Here are some more numbers to try:
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