A:
Positive:
1 x 130405455 x 26081097 x 186293535 x 37258767 x 19463583 x 157115335 x 38927415 x 31423469 x 27805581 x 224452345 x 55612905 x 4489
Negative:
-1 x -13040545-5 x -2608109-7 x -1862935-35 x -372587-67 x -194635-83 x -157115-335 x -38927-415 x -31423-469 x -27805-581 x -22445-2345 x -5561-2905 x -4489
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 13,040,545, 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 | 13,040,545 | |
| -1 | -13,040,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,040,545.
Example:
1 x 13,040,545 = 13,040,545
and
-1 x -13,040,545 = 13,040,545
Notice both answers equal 13,040,545
With that explanation out of the way, let's continue. Next, we take the number 13,040,545 and divide it by 2:
13,040,545 ÷ 2 = 6,520,272.5
If the quotient is a whole number, then 2 and 6,520,272.5 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 | 13,040,545 | |
| -1 | -13,040,545 |
Now, we try dividing 13,040,545 by 3:
13,040,545 ÷ 3 = 4,346,848.3333
If the quotient is a whole number, then 3 and 4,346,848.3333 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 | 13,040,545 | |
| -1 | -13,040,545 |
Let's try dividing by 4:
13,040,545 ÷ 4 = 3,260,136.25
If the quotient is a whole number, then 4 and 3,260,136.25 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 | 13,040,545 | |
| -1 | 13,040,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 67 | 83 | 335 | 415 | 469 | 581 | 2,345 | 2,905 | 4,489 | 5,561 | 22,445 | 27,805 | 31,423 | 38,927 | 157,115 | 194,635 | 372,587 | 1,862,935 | 2,608,109 | 13,040,545 |
| -1 | -5 | -7 | -35 | -67 | -83 | -335 | -415 | -469 | -581 | -2,345 | -2,905 | -4,489 | -5,561 | -22,445 | -27,805 | -31,423 | -38,927 | -157,115 | -194,635 | -372,587 | -1,862,935 | -2,608,109 | -13,040,545 |
Here are some more numbers to try:
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