A:
Positive:
1 x 131042155 x 262084341 x 31961597 x 135095205 x 63923485 x 27019659 x 198853295 x 3977
Negative:
-1 x -13104215-5 x -2620843-41 x -319615-97 x -135095-205 x -63923-485 x -27019-659 x -19885-3295 x -3977
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 13,104,215, 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 | 13,104,215 | |
| -1 | -13,104,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,104,215.
Example:
1 x 13,104,215 = 13,104,215
and
-1 x -13,104,215 = 13,104,215
Notice both answers equal 13,104,215
With that explanation out of the way, let's continue. Next, we take the number 13,104,215 and divide it by 2:
13,104,215 ÷ 2 = 6,552,107.5
If the quotient is a whole number, then 2 and 6,552,107.5 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 | 13,104,215 | |
| -1 | -13,104,215 |
Now, we try dividing 13,104,215 by 3:
13,104,215 ÷ 3 = 4,368,071.6667
If the quotient is a whole number, then 3 and 4,368,071.6667 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 | 13,104,215 | |
| -1 | -13,104,215 |
Let's try dividing by 4:
13,104,215 ÷ 4 = 3,276,053.75
If the quotient is a whole number, then 4 and 3,276,053.75 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 | 13,104,215 | |
| -1 | 13,104,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 97 | 205 | 485 | 659 | 3,295 | 3,977 | 19,885 | 27,019 | 63,923 | 135,095 | 319,615 | 2,620,843 | 13,104,215 |
| -1 | -5 | -41 | -97 | -205 | -485 | -659 | -3,295 | -3,977 | -19,885 | -27,019 | -63,923 | -135,095 | -319,615 | -2,620,843 | -13,104,215 |
Here are some more numbers to try:
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