A:
Positive:
1 x 130207755 x 260415525 x 52083131 x 42002553 x 245675155 x 84005265 x 49135317 x 41075775 x 168011325 x 98271585 x 82151643 x 7925
Negative:
-1 x -13020775-5 x -2604155-25 x -520831-31 x -420025-53 x -245675-155 x -84005-265 x -49135-317 x -41075-775 x -16801-1325 x -9827-1585 x -8215-1643 x -7925
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 13,020,775, 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 | 13,020,775 | |
| -1 | -13,020,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,020,775.
Example:
1 x 13,020,775 = 13,020,775
and
-1 x -13,020,775 = 13,020,775
Notice both answers equal 13,020,775
With that explanation out of the way, let's continue. Next, we take the number 13,020,775 and divide it by 2:
13,020,775 ÷ 2 = 6,510,387.5
If the quotient is a whole number, then 2 and 6,510,387.5 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 | 13,020,775 | |
| -1 | -13,020,775 |
Now, we try dividing 13,020,775 by 3:
13,020,775 ÷ 3 = 4,340,258.3333
If the quotient is a whole number, then 3 and 4,340,258.3333 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 | 13,020,775 | |
| -1 | -13,020,775 |
Let's try dividing by 4:
13,020,775 ÷ 4 = 3,255,193.75
If the quotient is a whole number, then 4 and 3,255,193.75 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 | 13,020,775 | |
| -1 | 13,020,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 31 | 53 | 155 | 265 | 317 | 775 | 1,325 | 1,585 | 1,643 | 7,925 | 8,215 | 9,827 | 16,801 | 41,075 | 49,135 | 84,005 | 245,675 | 420,025 | 520,831 | 2,604,155 | 13,020,775 |
| -1 | -5 | -25 | -31 | -53 | -155 | -265 | -317 | -775 | -1,325 | -1,585 | -1,643 | -7,925 | -8,215 | -9,827 | -16,801 | -41,075 | -49,135 | -84,005 | -245,675 | -420,025 | -520,831 | -2,604,155 | -13,020,775 |
Here are some more numbers to try:
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