A:
Positive:
1 x 1211154777 x 1730221143 x 2816639211 x 574007301 x 4023771477 x 820011907 x 635119073 x 13349
Negative:
-1 x -121115477-7 x -17302211-43 x -2816639-211 x -574007-301 x -402377-1477 x -82001-1907 x -63511-9073 x -13349
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 121,115,477, 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 | 121,115,477 | |
| -1 | -121,115,477 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,115,477.
Example:
1 x 121,115,477 = 121,115,477
and
-1 x -121,115,477 = 121,115,477
Notice both answers equal 121,115,477
With that explanation out of the way, let's continue. Next, we take the number 121,115,477 and divide it by 2:
121,115,477 ÷ 2 = 60,557,738.5
If the quotient is a whole number, then 2 and 60,557,738.5 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 | 121,115,477 | |
| -1 | -121,115,477 |
Now, we try dividing 121,115,477 by 3:
121,115,477 ÷ 3 = 40,371,825.6667
If the quotient is a whole number, then 3 and 40,371,825.6667 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 | 121,115,477 | |
| -1 | -121,115,477 |
Let's try dividing by 4:
121,115,477 ÷ 4 = 30,278,869.25
If the quotient is a whole number, then 4 and 30,278,869.25 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 | 121,115,477 | |
| -1 | 121,115,477 |
If you did it right, you will end up with this table:
| 1 | 7 | 43 | 211 | 301 | 1,477 | 1,907 | 9,073 | 13,349 | 63,511 | 82,001 | 402,377 | 574,007 | 2,816,639 | 17,302,211 | 121,115,477 |
| -1 | -7 | -43 | -211 | -301 | -1,477 | -1,907 | -9,073 | -13,349 | -63,511 | -82,001 | -402,377 | -574,007 | -2,816,639 | -17,302,211 | -121,115,477 |
Here are some more numbers to try:
Try the factor calculator