A:
Positive:
1 x 130054255 x 260108517 x 76502525 x 52021771 x 18317585 x 153005355 x 36635425 x 30601431 x 301751207 x 107751775 x 73272155 x 6035
Negative:
-1 x -13005425-5 x -2601085-17 x -765025-25 x -520217-71 x -183175-85 x -153005-355 x -36635-425 x -30601-431 x -30175-1207 x -10775-1775 x -7327-2155 x -6035
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 13,005,425, 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 | 13,005,425 | |
| -1 | -13,005,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,005,425.
Example:
1 x 13,005,425 = 13,005,425
and
-1 x -13,005,425 = 13,005,425
Notice both answers equal 13,005,425
With that explanation out of the way, let's continue. Next, we take the number 13,005,425 and divide it by 2:
13,005,425 ÷ 2 = 6,502,712.5
If the quotient is a whole number, then 2 and 6,502,712.5 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 | 13,005,425 | |
| -1 | -13,005,425 |
Now, we try dividing 13,005,425 by 3:
13,005,425 ÷ 3 = 4,335,141.6667
If the quotient is a whole number, then 3 and 4,335,141.6667 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 | 13,005,425 | |
| -1 | -13,005,425 |
Let's try dividing by 4:
13,005,425 ÷ 4 = 3,251,356.25
If the quotient is a whole number, then 4 and 3,251,356.25 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 | 13,005,425 | |
| -1 | 13,005,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 25 | 71 | 85 | 355 | 425 | 431 | 1,207 | 1,775 | 2,155 | 6,035 | 7,327 | 10,775 | 30,175 | 30,601 | 36,635 | 153,005 | 183,175 | 520,217 | 765,025 | 2,601,085 | 13,005,425 |
| -1 | -5 | -17 | -25 | -71 | -85 | -355 | -425 | -431 | -1,207 | -1,775 | -2,155 | -6,035 | -7,327 | -10,775 | -30,175 | -30,601 | -36,635 | -153,005 | -183,175 | -520,217 | -765,025 | -2,601,085 | -13,005,425 |
Here are some more numbers to try:
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