A:
Positive:
1 x 12157034917 x 715119729 x 419208183 x 1464703493 x 2465931411 x 861592407 x 505072971 x 40919
Negative:
-1 x -121570349-17 x -7151197-29 x -4192081-83 x -1464703-493 x -246593-1411 x -86159-2407 x -50507-2971 x -40919
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 121,570,349, 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 | 121,570,349 | |
| -1 | -121,570,349 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,570,349.
Example:
1 x 121,570,349 = 121,570,349
and
-1 x -121,570,349 = 121,570,349
Notice both answers equal 121,570,349
With that explanation out of the way, let's continue. Next, we take the number 121,570,349 and divide it by 2:
121,570,349 ÷ 2 = 60,785,174.5
If the quotient is a whole number, then 2 and 60,785,174.5 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 | 121,570,349 | |
| -1 | -121,570,349 |
Now, we try dividing 121,570,349 by 3:
121,570,349 ÷ 3 = 40,523,449.6667
If the quotient is a whole number, then 3 and 40,523,449.6667 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 | 121,570,349 | |
| -1 | -121,570,349 |
Let's try dividing by 4:
121,570,349 ÷ 4 = 30,392,587.25
If the quotient is a whole number, then 4 and 30,392,587.25 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 | 121,570,349 | |
| -1 | 121,570,349 |
If you did it right, you will end up with this table:
| 1 | 17 | 29 | 83 | 493 | 1,411 | 2,407 | 2,971 | 40,919 | 50,507 | 86,159 | 246,593 | 1,464,703 | 4,192,081 | 7,151,197 | 121,570,349 |
| -1 | -17 | -29 | -83 | -493 | -1,411 | -2,407 | -2,971 | -40,919 | -50,507 | -86,159 | -246,593 | -1,464,703 | -4,192,081 | -7,151,197 | -121,570,349 |
Here are some more numbers to try:
Try the factor calculator