A:
Positive:
1 x 1131431217 x 1616330313 x 870331791 x 1243331547 x 2068432273 x 497773829 x 295497111 x 15911
Negative:
-1 x -113143121-7 x -16163303-13 x -8703317-91 x -1243331-547 x -206843-2273 x -49777-3829 x -29549-7111 x -15911
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 113,143,121, 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 | 113,143,121 | |
| -1 | -113,143,121 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 113,143,121.
Example:
1 x 113,143,121 = 113,143,121
and
-1 x -113,143,121 = 113,143,121
Notice both answers equal 113,143,121
With that explanation out of the way, let's continue. Next, we take the number 113,143,121 and divide it by 2:
113,143,121 ÷ 2 = 56,571,560.5
If the quotient is a whole number, then 2 and 56,571,560.5 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 | 113,143,121 | |
| -1 | -113,143,121 |
Now, we try dividing 113,143,121 by 3:
113,143,121 ÷ 3 = 37,714,373.6667
If the quotient is a whole number, then 3 and 37,714,373.6667 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 | 113,143,121 | |
| -1 | -113,143,121 |
Let's try dividing by 4:
113,143,121 ÷ 4 = 28,285,780.25
If the quotient is a whole number, then 4 and 28,285,780.25 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 | 113,143,121 | |
| -1 | 113,143,121 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 547 | 2,273 | 3,829 | 7,111 | 15,911 | 29,549 | 49,777 | 206,843 | 1,243,331 | 8,703,317 | 16,163,303 | 113,143,121 |
| -1 | -7 | -13 | -91 | -547 | -2,273 | -3,829 | -7,111 | -15,911 | -29,549 | -49,777 | -206,843 | -1,243,331 | -8,703,317 | -16,163,303 | -113,143,121 |
Here are some more numbers to try:
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