A:
Positive:
1 x 1212323155 x 2424646359 x 205478561 x 1987415295 x 410957305 x 3974833599 x 336856737 x 17995
Negative:
-1 x -121232315-5 x -24246463-59 x -2054785-61 x -1987415-295 x -410957-305 x -397483-3599 x -33685-6737 x -17995
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 121,232,315, 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 | 121,232,315 | |
| -1 | -121,232,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,232,315.
Example:
1 x 121,232,315 = 121,232,315
and
-1 x -121,232,315 = 121,232,315
Notice both answers equal 121,232,315
With that explanation out of the way, let's continue. Next, we take the number 121,232,315 and divide it by 2:
121,232,315 ÷ 2 = 60,616,157.5
If the quotient is a whole number, then 2 and 60,616,157.5 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 | 121,232,315 | |
| -1 | -121,232,315 |
Now, we try dividing 121,232,315 by 3:
121,232,315 ÷ 3 = 40,410,771.6667
If the quotient is a whole number, then 3 and 40,410,771.6667 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 | 121,232,315 | |
| -1 | -121,232,315 |
Let's try dividing by 4:
121,232,315 ÷ 4 = 30,308,078.75
If the quotient is a whole number, then 4 and 30,308,078.75 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 | 121,232,315 | |
| -1 | 121,232,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 59 | 61 | 295 | 305 | 3,599 | 6,737 | 17,995 | 33,685 | 397,483 | 410,957 | 1,987,415 | 2,054,785 | 24,246,463 | 121,232,315 |
| -1 | -5 | -59 | -61 | -295 | -305 | -3,599 | -6,737 | -17,995 | -33,685 | -397,483 | -410,957 | -1,987,415 | -2,054,785 | -24,246,463 | -121,232,315 |
Here are some more numbers to try:
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