A:
Positive:
1 x 181181755 x 362363517 x 106577525 x 72472785 x 21315589 x 203575425 x 42631445 x 40715479 x 378251513 x 119752225 x 81432395 x 7565
Negative:
-1 x -18118175-5 x -3623635-17 x -1065775-25 x -724727-85 x -213155-89 x -203575-425 x -42631-445 x -40715-479 x -37825-1513 x -11975-2225 x -8143-2395 x -7565
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 18,118,175, 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 | 18,118,175 | |
| -1 | -18,118,175 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,118,175.
Example:
1 x 18,118,175 = 18,118,175
and
-1 x -18,118,175 = 18,118,175
Notice both answers equal 18,118,175
With that explanation out of the way, let's continue. Next, we take the number 18,118,175 and divide it by 2:
18,118,175 ÷ 2 = 9,059,087.5
If the quotient is a whole number, then 2 and 9,059,087.5 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 | 18,118,175 | |
| -1 | -18,118,175 |
Now, we try dividing 18,118,175 by 3:
18,118,175 ÷ 3 = 6,039,391.6667
If the quotient is a whole number, then 3 and 6,039,391.6667 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 | 18,118,175 | |
| -1 | -18,118,175 |
Let's try dividing by 4:
18,118,175 ÷ 4 = 4,529,543.75
If the quotient is a whole number, then 4 and 4,529,543.75 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 | 18,118,175 | |
| -1 | 18,118,175 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 25 | 85 | 89 | 425 | 445 | 479 | 1,513 | 2,225 | 2,395 | 7,565 | 8,143 | 11,975 | 37,825 | 40,715 | 42,631 | 203,575 | 213,155 | 724,727 | 1,065,775 | 3,623,635 | 18,118,175 |
| -1 | -5 | -17 | -25 | -85 | -89 | -425 | -445 | -479 | -1,513 | -2,225 | -2,395 | -7,565 | -8,143 | -11,975 | -37,825 | -40,715 | -42,631 | -203,575 | -213,155 | -724,727 | -1,065,775 | -3,623,635 | -18,118,175 |
Here are some more numbers to try:
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