A:
Positive:
1 x 2603545855 x 5207091731 x 8398535155 x 1679707397 x 6558051985 x 1311614231 x 6153512307 x 21155
Negative:
-1 x -260354585-5 x -52070917-31 x -8398535-155 x -1679707-397 x -655805-1985 x -131161-4231 x -61535-12307 x -21155
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 260,354,585, 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 | 260,354,585 | |
| -1 | -260,354,585 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 260,354,585.
Example:
1 x 260,354,585 = 260,354,585
and
-1 x -260,354,585 = 260,354,585
Notice both answers equal 260,354,585
With that explanation out of the way, let's continue. Next, we take the number 260,354,585 and divide it by 2:
260,354,585 ÷ 2 = 130,177,292.5
If the quotient is a whole number, then 2 and 130,177,292.5 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 | 260,354,585 | |
| -1 | -260,354,585 |
Now, we try dividing 260,354,585 by 3:
260,354,585 ÷ 3 = 86,784,861.6667
If the quotient is a whole number, then 3 and 86,784,861.6667 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 | 260,354,585 | |
| -1 | -260,354,585 |
Let's try dividing by 4:
260,354,585 ÷ 4 = 65,088,646.25
If the quotient is a whole number, then 4 and 65,088,646.25 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 | 260,354,585 | |
| -1 | 260,354,585 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 155 | 397 | 1,985 | 4,231 | 12,307 | 21,155 | 61,535 | 131,161 | 655,805 | 1,679,707 | 8,398,535 | 52,070,917 | 260,354,585 |
| -1 | -5 | -31 | -155 | -397 | -1,985 | -4,231 | -12,307 | -21,155 | -61,535 | -131,161 | -655,805 | -1,679,707 | -8,398,535 | -52,070,917 | -260,354,585 |
Here are some more numbers to try:
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