A:
Positive:
1 x 1331198919 x 70063131 x 42941997 x 137237233 x 57133589 x 226011843 x 72233007 x 4427
Negative:
-1 x -13311989-19 x -700631-31 x -429419-97 x -137237-233 x -57133-589 x -22601-1843 x -7223-3007 x -4427
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 13,311,989, 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 | 13,311,989 | |
| -1 | -13,311,989 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,311,989.
Example:
1 x 13,311,989 = 13,311,989
and
-1 x -13,311,989 = 13,311,989
Notice both answers equal 13,311,989
With that explanation out of the way, let's continue. Next, we take the number 13,311,989 and divide it by 2:
13,311,989 ÷ 2 = 6,655,994.5
If the quotient is a whole number, then 2 and 6,655,994.5 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 | 13,311,989 | |
| -1 | -13,311,989 |
Now, we try dividing 13,311,989 by 3:
13,311,989 ÷ 3 = 4,437,329.6667
If the quotient is a whole number, then 3 and 4,437,329.6667 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 | 13,311,989 | |
| -1 | -13,311,989 |
Let's try dividing by 4:
13,311,989 ÷ 4 = 3,327,997.25
If the quotient is a whole number, then 4 and 3,327,997.25 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 | 13,311,989 | |
| -1 | 13,311,989 |
If you did it right, you will end up with this table:
| 1 | 19 | 31 | 97 | 233 | 589 | 1,843 | 3,007 | 4,427 | 7,223 | 22,601 | 57,133 | 137,237 | 429,419 | 700,631 | 13,311,989 |
| -1 | -19 | -31 | -97 | -233 | -589 | -1,843 | -3,007 | -4,427 | -7,223 | -22,601 | -57,133 | -137,237 | -429,419 | -700,631 | -13,311,989 |
Here are some more numbers to try:
Try the factor calculator