A:
Positive:
1 x 132889617 x 189842319 x 69941941 x 324121133 x 99917287 x 46303779 x 170592437 x 5453
Negative:
-1 x -13288961-7 x -1898423-19 x -699419-41 x -324121-133 x -99917-287 x -46303-779 x -17059-2437 x -5453
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 13,288,961, 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 | 13,288,961 | |
| -1 | -13,288,961 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,288,961.
Example:
1 x 13,288,961 = 13,288,961
and
-1 x -13,288,961 = 13,288,961
Notice both answers equal 13,288,961
With that explanation out of the way, let's continue. Next, we take the number 13,288,961 and divide it by 2:
13,288,961 ÷ 2 = 6,644,480.5
If the quotient is a whole number, then 2 and 6,644,480.5 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 | 13,288,961 | |
| -1 | -13,288,961 |
Now, we try dividing 13,288,961 by 3:
13,288,961 ÷ 3 = 4,429,653.6667
If the quotient is a whole number, then 3 and 4,429,653.6667 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 | 13,288,961 | |
| -1 | -13,288,961 |
Let's try dividing by 4:
13,288,961 ÷ 4 = 3,322,240.25
If the quotient is a whole number, then 4 and 3,322,240.25 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 | 13,288,961 | |
| -1 | 13,288,961 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 41 | 133 | 287 | 779 | 2,437 | 5,453 | 17,059 | 46,303 | 99,917 | 324,121 | 699,419 | 1,898,423 | 13,288,961 |
| -1 | -7 | -19 | -41 | -133 | -287 | -779 | -2,437 | -5,453 | -17,059 | -46,303 | -99,917 | -324,121 | -699,419 | -1,898,423 | -13,288,961 |
Here are some more numbers to try:
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