A:
Positive:
1 x 1212062655 x 2424125337 x 3275845185 x 655169229 x 5292851145 x 1058572861 x 423658473 x 14305
Negative:
-1 x -121206265-5 x -24241253-37 x -3275845-185 x -655169-229 x -529285-1145 x -105857-2861 x -42365-8473 x -14305
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 121,206,265, 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 | 121,206,265 | |
| -1 | -121,206,265 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,206,265.
Example:
1 x 121,206,265 = 121,206,265
and
-1 x -121,206,265 = 121,206,265
Notice both answers equal 121,206,265
With that explanation out of the way, let's continue. Next, we take the number 121,206,265 and divide it by 2:
121,206,265 ÷ 2 = 60,603,132.5
If the quotient is a whole number, then 2 and 60,603,132.5 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 | 121,206,265 | |
| -1 | -121,206,265 |
Now, we try dividing 121,206,265 by 3:
121,206,265 ÷ 3 = 40,402,088.3333
If the quotient is a whole number, then 3 and 40,402,088.3333 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 | 121,206,265 | |
| -1 | -121,206,265 |
Let's try dividing by 4:
121,206,265 ÷ 4 = 30,301,566.25
If the quotient is a whole number, then 4 and 30,301,566.25 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 | 121,206,265 | |
| -1 | 121,206,265 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 185 | 229 | 1,145 | 2,861 | 8,473 | 14,305 | 42,365 | 105,857 | 529,285 | 655,169 | 3,275,845 | 24,241,253 | 121,206,265 |
| -1 | -5 | -37 | -185 | -229 | -1,145 | -2,861 | -8,473 | -14,305 | -42,365 | -105,857 | -529,285 | -655,169 | -3,275,845 | -24,241,253 | -121,206,265 |
Here are some more numbers to try:
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