A:
Positive:
1 x 2807748255 x 5615496525 x 1123099371 x 3954575317 x 885725355 x 790915499 x 5626751585 x 1771451775 x 1581832495 x 1125357925 x 3542912475 x 22507
Negative:
-1 x -280774825-5 x -56154965-25 x -11230993-71 x -3954575-317 x -885725-355 x -790915-499 x -562675-1585 x -177145-1775 x -158183-2495 x -112535-7925 x -35429-12475 x -22507
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 280,774,825, 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 | 280,774,825 | |
| -1 | -280,774,825 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 280,774,825.
Example:
1 x 280,774,825 = 280,774,825
and
-1 x -280,774,825 = 280,774,825
Notice both answers equal 280,774,825
With that explanation out of the way, let's continue. Next, we take the number 280,774,825 and divide it by 2:
280,774,825 ÷ 2 = 140,387,412.5
If the quotient is a whole number, then 2 and 140,387,412.5 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 | 280,774,825 | |
| -1 | -280,774,825 |
Now, we try dividing 280,774,825 by 3:
280,774,825 ÷ 3 = 93,591,608.3333
If the quotient is a whole number, then 3 and 93,591,608.3333 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 | 280,774,825 | |
| -1 | -280,774,825 |
Let's try dividing by 4:
280,774,825 ÷ 4 = 70,193,706.25
If the quotient is a whole number, then 4 and 70,193,706.25 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 | 280,774,825 | |
| -1 | 280,774,825 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 71 | 317 | 355 | 499 | 1,585 | 1,775 | 2,495 | 7,925 | 12,475 | 22,507 | 35,429 | 112,535 | 158,183 | 177,145 | 562,675 | 790,915 | 885,725 | 3,954,575 | 11,230,993 | 56,154,965 | 280,774,825 |
| -1 | -5 | -25 | -71 | -317 | -355 | -499 | -1,585 | -1,775 | -2,495 | -7,925 | -12,475 | -22,507 | -35,429 | -112,535 | -158,183 | -177,145 | -562,675 | -790,915 | -885,725 | -3,954,575 | -11,230,993 | -56,154,965 | -280,774,825 |
Here are some more numbers to try:
Try the factor calculator