A:
Positive:
1 x 1201112455 x 24022249107 x 1122535461 x 260545487 x 246635535 x 2245072305 x 521092435 x 49327
Negative:
-1 x -120111245-5 x -24022249-107 x -1122535-461 x -260545-487 x -246635-535 x -224507-2305 x -52109-2435 x -49327
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 120,111,245, 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 | 120,111,245 | |
| -1 | -120,111,245 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,111,245.
Example:
1 x 120,111,245 = 120,111,245
and
-1 x -120,111,245 = 120,111,245
Notice both answers equal 120,111,245
With that explanation out of the way, let's continue. Next, we take the number 120,111,245 and divide it by 2:
120,111,245 ÷ 2 = 60,055,622.5
If the quotient is a whole number, then 2 and 60,055,622.5 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 | 120,111,245 | |
| -1 | -120,111,245 |
Now, we try dividing 120,111,245 by 3:
120,111,245 ÷ 3 = 40,037,081.6667
If the quotient is a whole number, then 3 and 40,037,081.6667 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 | 120,111,245 | |
| -1 | -120,111,245 |
Let's try dividing by 4:
120,111,245 ÷ 4 = 30,027,811.25
If the quotient is a whole number, then 4 and 30,027,811.25 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 | 120,111,245 | |
| -1 | 120,111,245 |
If you did it right, you will end up with this table:
| 1 | 5 | 107 | 461 | 487 | 535 | 2,305 | 2,435 | 49,327 | 52,109 | 224,507 | 246,635 | 260,545 | 1,122,535 | 24,022,249 | 120,111,245 |
| -1 | -5 | -107 | -461 | -487 | -535 | -2,305 | -2,435 | -49,327 | -52,109 | -224,507 | -246,635 | -260,545 | -1,122,535 | -24,022,249 | -120,111,245 |
Here are some more numbers to try:
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