A:
Positive:
1 x 2558941555 x 5117883111 x 2326310555 x 4652621557 x 4594152785 x 918836127 x 417658353 x 30635
Negative:
-1 x -255894155-5 x -51178831-11 x -23263105-55 x -4652621-557 x -459415-2785 x -91883-6127 x -41765-8353 x -30635
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 255,894,155, 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 | 255,894,155 | |
| -1 | -255,894,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 255,894,155.
Example:
1 x 255,894,155 = 255,894,155
and
-1 x -255,894,155 = 255,894,155
Notice both answers equal 255,894,155
With that explanation out of the way, let's continue. Next, we take the number 255,894,155 and divide it by 2:
255,894,155 ÷ 2 = 127,947,077.5
If the quotient is a whole number, then 2 and 127,947,077.5 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 | 255,894,155 | |
| -1 | -255,894,155 |
Now, we try dividing 255,894,155 by 3:
255,894,155 ÷ 3 = 85,298,051.6667
If the quotient is a whole number, then 3 and 85,298,051.6667 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 | 255,894,155 | |
| -1 | -255,894,155 |
Let's try dividing by 4:
255,894,155 ÷ 4 = 63,973,538.75
If the quotient is a whole number, then 4 and 63,973,538.75 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 | 255,894,155 | |
| -1 | 255,894,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 557 | 2,785 | 6,127 | 8,353 | 30,635 | 41,765 | 91,883 | 459,415 | 4,652,621 | 23,263,105 | 51,178,831 | 255,894,155 |
| -1 | -5 | -11 | -55 | -557 | -2,785 | -6,127 | -8,353 | -30,635 | -41,765 | -91,883 | -459,415 | -4,652,621 | -23,263,105 | -51,178,831 | -255,894,155 |
Here are some more numbers to try:
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