A:
Positive:
1 x 1085552517 x 1550789317 x 6385603119 x 912229173 x 6274871211 x 896412941 x 369115273 x 20587
Negative:
-1 x -108555251-7 x -15507893-17 x -6385603-119 x -912229-173 x -627487-1211 x -89641-2941 x -36911-5273 x -20587
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 108,555,251, 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 | 108,555,251 | |
| -1 | -108,555,251 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 108,555,251.
Example:
1 x 108,555,251 = 108,555,251
and
-1 x -108,555,251 = 108,555,251
Notice both answers equal 108,555,251
With that explanation out of the way, let's continue. Next, we take the number 108,555,251 and divide it by 2:
108,555,251 ÷ 2 = 54,277,625.5
If the quotient is a whole number, then 2 and 54,277,625.5 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 | 108,555,251 | |
| -1 | -108,555,251 |
Now, we try dividing 108,555,251 by 3:
108,555,251 ÷ 3 = 36,185,083.6667
If the quotient is a whole number, then 3 and 36,185,083.6667 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 | 108,555,251 | |
| -1 | -108,555,251 |
Let's try dividing by 4:
108,555,251 ÷ 4 = 27,138,812.75
If the quotient is a whole number, then 4 and 27,138,812.75 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 | 108,555,251 | |
| -1 | 108,555,251 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 173 | 1,211 | 2,941 | 5,273 | 20,587 | 36,911 | 89,641 | 627,487 | 912,229 | 6,385,603 | 15,507,893 | 108,555,251 |
| -1 | -7 | -17 | -119 | -173 | -1,211 | -2,941 | -5,273 | -20,587 | -36,911 | -89,641 | -627,487 | -912,229 | -6,385,603 | -15,507,893 | -108,555,251 |
Here are some more numbers to try:
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