A:
Positive:
1 x 9983210913 x 767939317 x 587247797 x 1029197221 x 4517291261 x 791691649 x 605414657 x 21437
Negative:
-1 x -99832109-13 x -7679393-17 x -5872477-97 x -1029197-221 x -451729-1261 x -79169-1649 x -60541-4657 x -21437
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 99,832,109, 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 | 99,832,109 | |
| -1 | -99,832,109 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 99,832,109.
Example:
1 x 99,832,109 = 99,832,109
and
-1 x -99,832,109 = 99,832,109
Notice both answers equal 99,832,109
With that explanation out of the way, let's continue. Next, we take the number 99,832,109 and divide it by 2:
99,832,109 ÷ 2 = 49,916,054.5
If the quotient is a whole number, then 2 and 49,916,054.5 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 | 99,832,109 | |
| -1 | -99,832,109 |
Now, we try dividing 99,832,109 by 3:
99,832,109 ÷ 3 = 33,277,369.6667
If the quotient is a whole number, then 3 and 33,277,369.6667 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 | 99,832,109 | |
| -1 | -99,832,109 |
Let's try dividing by 4:
99,832,109 ÷ 4 = 24,958,027.25
If the quotient is a whole number, then 4 and 24,958,027.25 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 | 99,832,109 | |
| -1 | 99,832,109 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 97 | 221 | 1,261 | 1,649 | 4,657 | 21,437 | 60,541 | 79,169 | 451,729 | 1,029,197 | 5,872,477 | 7,679,393 | 99,832,109 |
| -1 | -13 | -17 | -97 | -221 | -1,261 | -1,649 | -4,657 | -21,437 | -60,541 | -79,169 | -451,729 | -1,029,197 | -5,872,477 | -7,679,393 | -99,832,109 |
Here are some more numbers to try:
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