A:
Positive:
1 x 130282255 x 26056457 x 186117525 x 52112935 x 372235109 x 119525175 x 74447545 x 23905683 x 19075763 x 170752725 x 47813415 x 3815
Negative:
-1 x -13028225-5 x -2605645-7 x -1861175-25 x -521129-35 x -372235-109 x -119525-175 x -74447-545 x -23905-683 x -19075-763 x -17075-2725 x -4781-3415 x -3815
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 13,028,225, 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 | 13,028,225 | |
| -1 | -13,028,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,028,225.
Example:
1 x 13,028,225 = 13,028,225
and
-1 x -13,028,225 = 13,028,225
Notice both answers equal 13,028,225
With that explanation out of the way, let's continue. Next, we take the number 13,028,225 and divide it by 2:
13,028,225 ÷ 2 = 6,514,112.5
If the quotient is a whole number, then 2 and 6,514,112.5 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 | 13,028,225 | |
| -1 | -13,028,225 |
Now, we try dividing 13,028,225 by 3:
13,028,225 ÷ 3 = 4,342,741.6667
If the quotient is a whole number, then 3 and 4,342,741.6667 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 | 13,028,225 | |
| -1 | -13,028,225 |
Let's try dividing by 4:
13,028,225 ÷ 4 = 3,257,056.25
If the quotient is a whole number, then 4 and 3,257,056.25 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 | 13,028,225 | |
| -1 | 13,028,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 109 | 175 | 545 | 683 | 763 | 2,725 | 3,415 | 3,815 | 4,781 | 17,075 | 19,075 | 23,905 | 74,447 | 119,525 | 372,235 | 521,129 | 1,861,175 | 2,605,645 | 13,028,225 |
| -1 | -5 | -7 | -25 | -35 | -109 | -175 | -545 | -683 | -763 | -2,725 | -3,415 | -3,815 | -4,781 | -17,075 | -19,075 | -23,905 | -74,447 | -119,525 | -372,235 | -521,129 | -1,861,175 | -2,605,645 | -13,028,225 |
Here are some more numbers to try:
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