A:
Positive:
1 x 12137453911 x 1103404913 x 933650347 x 2582437143 x 848773517 x 234767611 x 1986496721 x 18059
Negative:
-1 x -121374539-11 x -11034049-13 x -9336503-47 x -2582437-143 x -848773-517 x -234767-611 x -198649-6721 x -18059
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 121,374,539, 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 | 121,374,539 | |
| -1 | -121,374,539 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,374,539.
Example:
1 x 121,374,539 = 121,374,539
and
-1 x -121,374,539 = 121,374,539
Notice both answers equal 121,374,539
With that explanation out of the way, let's continue. Next, we take the number 121,374,539 and divide it by 2:
121,374,539 ÷ 2 = 60,687,269.5
If the quotient is a whole number, then 2 and 60,687,269.5 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 | 121,374,539 | |
| -1 | -121,374,539 |
Now, we try dividing 121,374,539 by 3:
121,374,539 ÷ 3 = 40,458,179.6667
If the quotient is a whole number, then 3 and 40,458,179.6667 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 | 121,374,539 | |
| -1 | -121,374,539 |
Let's try dividing by 4:
121,374,539 ÷ 4 = 30,343,634.75
If the quotient is a whole number, then 4 and 30,343,634.75 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 | 121,374,539 | |
| -1 | 121,374,539 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 47 | 143 | 517 | 611 | 6,721 | 18,059 | 198,649 | 234,767 | 848,773 | 2,582,437 | 9,336,503 | 11,034,049 | 121,374,539 |
| -1 | -11 | -13 | -47 | -143 | -517 | -611 | -6,721 | -18,059 | -198,649 | -234,767 | -848,773 | -2,582,437 | -9,336,503 | -11,034,049 | -121,374,539 |
Here are some more numbers to try:
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