A:
Positive:
1 x 133211055 x 26642217 x 190301535 x 38060341 x 324905205 x 64981287 x 464151435 x 9283
Negative:
-1 x -13321105-5 x -2664221-7 x -1903015-35 x -380603-41 x -324905-205 x -64981-287 x -46415-1435 x -9283
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 13,321,105, 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 | 13,321,105 | |
| -1 | -13,321,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,321,105.
Example:
1 x 13,321,105 = 13,321,105
and
-1 x -13,321,105 = 13,321,105
Notice both answers equal 13,321,105
With that explanation out of the way, let's continue. Next, we take the number 13,321,105 and divide it by 2:
13,321,105 ÷ 2 = 6,660,552.5
If the quotient is a whole number, then 2 and 6,660,552.5 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 | 13,321,105 | |
| -1 | -13,321,105 |
Now, we try dividing 13,321,105 by 3:
13,321,105 ÷ 3 = 4,440,368.3333
If the quotient is a whole number, then 3 and 4,440,368.3333 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 | 13,321,105 | |
| -1 | -13,321,105 |
Let's try dividing by 4:
13,321,105 ÷ 4 = 3,330,276.25
If the quotient is a whole number, then 4 and 3,330,276.25 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 | 13,321,105 | |
| -1 | 13,321,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 41 | 205 | 287 | 1,435 | 9,283 | 46,415 | 64,981 | 324,905 | 380,603 | 1,903,015 | 2,664,221 | 13,321,105 |
| -1 | -5 | -7 | -35 | -41 | -205 | -287 | -1,435 | -9,283 | -46,415 | -64,981 | -324,905 | -380,603 | -1,903,015 | -2,664,221 | -13,321,105 |
Here are some more numbers to try:
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