A:
Positive:
1 x 156551155 x 31310237 x 223644535 x 447289433 x 361551033 x 151552165 x 72313031 x 5165
Negative:
-1 x -15655115-5 x -3131023-7 x -2236445-35 x -447289-433 x -36155-1033 x -15155-2165 x -7231-3031 x -5165
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 15,655,115, 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 | 15,655,115 | |
| -1 | -15,655,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,655,115.
Example:
1 x 15,655,115 = 15,655,115
and
-1 x -15,655,115 = 15,655,115
Notice both answers equal 15,655,115
With that explanation out of the way, let's continue. Next, we take the number 15,655,115 and divide it by 2:
15,655,115 ÷ 2 = 7,827,557.5
If the quotient is a whole number, then 2 and 7,827,557.5 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 | 15,655,115 | |
| -1 | -15,655,115 |
Now, we try dividing 15,655,115 by 3:
15,655,115 ÷ 3 = 5,218,371.6667
If the quotient is a whole number, then 3 and 5,218,371.6667 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 | 15,655,115 | |
| -1 | -15,655,115 |
Let's try dividing by 4:
15,655,115 ÷ 4 = 3,913,778.75
If the quotient is a whole number, then 4 and 3,913,778.75 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 | 15,655,115 | |
| -1 | 15,655,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 433 | 1,033 | 2,165 | 3,031 | 5,165 | 7,231 | 15,155 | 36,155 | 447,289 | 2,236,445 | 3,131,023 | 15,655,115 |
| -1 | -5 | -7 | -35 | -433 | -1,033 | -2,165 | -3,031 | -5,165 | -7,231 | -15,155 | -36,155 | -447,289 | -2,236,445 | -3,131,023 | -15,655,115 |
Here are some more numbers to try:
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