A:
Positive:
1 x 130204255 x 260408511 x 118367525 x 52081755 x 236735113 x 115225275 x 47347419 x 31075565 x 230451243 x 104752095 x 62152825 x 4609
Negative:
-1 x -13020425-5 x -2604085-11 x -1183675-25 x -520817-55 x -236735-113 x -115225-275 x -47347-419 x -31075-565 x -23045-1243 x -10475-2095 x -6215-2825 x -4609
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 13,020,425, 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 | 13,020,425 | |
| -1 | -13,020,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,020,425.
Example:
1 x 13,020,425 = 13,020,425
and
-1 x -13,020,425 = 13,020,425
Notice both answers equal 13,020,425
With that explanation out of the way, let's continue. Next, we take the number 13,020,425 and divide it by 2:
13,020,425 ÷ 2 = 6,510,212.5
If the quotient is a whole number, then 2 and 6,510,212.5 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 | 13,020,425 | |
| -1 | -13,020,425 |
Now, we try dividing 13,020,425 by 3:
13,020,425 ÷ 3 = 4,340,141.6667
If the quotient is a whole number, then 3 and 4,340,141.6667 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 | 13,020,425 | |
| -1 | -13,020,425 |
Let's try dividing by 4:
13,020,425 ÷ 4 = 3,255,106.25
If the quotient is a whole number, then 4 and 3,255,106.25 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 | 13,020,425 | |
| -1 | 13,020,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 113 | 275 | 419 | 565 | 1,243 | 2,095 | 2,825 | 4,609 | 6,215 | 10,475 | 23,045 | 31,075 | 47,347 | 115,225 | 236,735 | 520,817 | 1,183,675 | 2,604,085 | 13,020,425 |
| -1 | -5 | -11 | -25 | -55 | -113 | -275 | -419 | -565 | -1,243 | -2,095 | -2,825 | -4,609 | -6,215 | -10,475 | -23,045 | -31,075 | -47,347 | -115,225 | -236,735 | -520,817 | -1,183,675 | -2,604,085 | -13,020,425 |
Here are some more numbers to try:
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