A:
Positive:
1 x 1201113055 x 24022261173 x 694285191 x 628855727 x 165215865 x 138857955 x 1257713635 x 33043
Negative:
-1 x -120111305-5 x -24022261-173 x -694285-191 x -628855-727 x -165215-865 x -138857-955 x -125771-3635 x -33043
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 120,111,305, 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 | 120,111,305 | |
| -1 | -120,111,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,111,305.
Example:
1 x 120,111,305 = 120,111,305
and
-1 x -120,111,305 = 120,111,305
Notice both answers equal 120,111,305
With that explanation out of the way, let's continue. Next, we take the number 120,111,305 and divide it by 2:
120,111,305 ÷ 2 = 60,055,652.5
If the quotient is a whole number, then 2 and 60,055,652.5 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 | 120,111,305 | |
| -1 | -120,111,305 |
Now, we try dividing 120,111,305 by 3:
120,111,305 ÷ 3 = 40,037,101.6667
If the quotient is a whole number, then 3 and 40,037,101.6667 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 | 120,111,305 | |
| -1 | -120,111,305 |
Let's try dividing by 4:
120,111,305 ÷ 4 = 30,027,826.25
If the quotient is a whole number, then 4 and 30,027,826.25 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 | 120,111,305 | |
| -1 | 120,111,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 173 | 191 | 727 | 865 | 955 | 3,635 | 33,043 | 125,771 | 138,857 | 165,215 | 628,855 | 694,285 | 24,022,261 | 120,111,305 |
| -1 | -5 | -173 | -191 | -727 | -865 | -955 | -3,635 | -33,043 | -125,771 | -138,857 | -165,215 | -628,855 | -694,285 | -24,022,261 | -120,111,305 |
Here are some more numbers to try:
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