A:
Positive:
1 x 1227111055 x 2454222111 x 1115555555 x 2231111941 x 1304052371 x 517554705 x 2608110351 x 11855
Negative:
-1 x -122711105-5 x -24542221-11 x -11155555-55 x -2231111-941 x -130405-2371 x -51755-4705 x -26081-10351 x -11855
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 122,711,105, 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 | 122,711,105 | |
| -1 | -122,711,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 122,711,105.
Example:
1 x 122,711,105 = 122,711,105
and
-1 x -122,711,105 = 122,711,105
Notice both answers equal 122,711,105
With that explanation out of the way, let's continue. Next, we take the number 122,711,105 and divide it by 2:
122,711,105 ÷ 2 = 61,355,552.5
If the quotient is a whole number, then 2 and 61,355,552.5 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 | 122,711,105 | |
| -1 | -122,711,105 |
Now, we try dividing 122,711,105 by 3:
122,711,105 ÷ 3 = 40,903,701.6667
If the quotient is a whole number, then 3 and 40,903,701.6667 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 | 122,711,105 | |
| -1 | -122,711,105 |
Let's try dividing by 4:
122,711,105 ÷ 4 = 30,677,776.25
If the quotient is a whole number, then 4 and 30,677,776.25 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 | 122,711,105 | |
| -1 | 122,711,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 941 | 2,371 | 4,705 | 10,351 | 11,855 | 26,081 | 51,755 | 130,405 | 2,231,111 | 11,155,555 | 24,542,221 | 122,711,105 |
| -1 | -5 | -11 | -55 | -941 | -2,371 | -4,705 | -10,351 | -11,855 | -26,081 | -51,755 | -130,405 | -2,231,111 | -11,155,555 | -24,542,221 | -122,711,105 |
Here are some more numbers to try:
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