A:
Positive:
1 x 12132239911 x 1102930929 x 4183531277 x 437987319 x 3803211373 x 883633047 x 398178033 x 15103
Negative:
-1 x -121322399-11 x -11029309-29 x -4183531-277 x -437987-319 x -380321-1373 x -88363-3047 x -39817-8033 x -15103
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 121,322,399, 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 | 121,322,399 | |
| -1 | -121,322,399 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,322,399.
Example:
1 x 121,322,399 = 121,322,399
and
-1 x -121,322,399 = 121,322,399
Notice both answers equal 121,322,399
With that explanation out of the way, let's continue. Next, we take the number 121,322,399 and divide it by 2:
121,322,399 ÷ 2 = 60,661,199.5
If the quotient is a whole number, then 2 and 60,661,199.5 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 | 121,322,399 | |
| -1 | -121,322,399 |
Now, we try dividing 121,322,399 by 3:
121,322,399 ÷ 3 = 40,440,799.6667
If the quotient is a whole number, then 3 and 40,440,799.6667 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 | 121,322,399 | |
| -1 | -121,322,399 |
Let's try dividing by 4:
121,322,399 ÷ 4 = 30,330,599.75
If the quotient is a whole number, then 4 and 30,330,599.75 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 | 121,322,399 | |
| -1 | 121,322,399 |
If you did it right, you will end up with this table:
| 1 | 11 | 29 | 277 | 319 | 1,373 | 3,047 | 8,033 | 15,103 | 39,817 | 88,363 | 380,321 | 437,987 | 4,183,531 | 11,029,309 | 121,322,399 |
| -1 | -11 | -29 | -277 | -319 | -1,373 | -3,047 | -8,033 | -15,103 | -39,817 | -88,363 | -380,321 | -437,987 | -4,183,531 | -11,029,309 | -121,322,399 |
Here are some more numbers to try:
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