A:
Positive:
1 x 2562458455 x 5124916917 x 1507328531 x 826599585 x 3014657155 x 1653199527 x 486235961 x 2666452635 x 972473137 x 816854805 x 5332915685 x 16337
Negative:
-1 x -256245845-5 x -51249169-17 x -15073285-31 x -8265995-85 x -3014657-155 x -1653199-527 x -486235-961 x -266645-2635 x -97247-3137 x -81685-4805 x -53329-15685 x -16337
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 256,245,845, 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 | 256,245,845 | |
| -1 | -256,245,845 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 256,245,845.
Example:
1 x 256,245,845 = 256,245,845
and
-1 x -256,245,845 = 256,245,845
Notice both answers equal 256,245,845
With that explanation out of the way, let's continue. Next, we take the number 256,245,845 and divide it by 2:
256,245,845 ÷ 2 = 128,122,922.5
If the quotient is a whole number, then 2 and 128,122,922.5 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 | 256,245,845 | |
| -1 | -256,245,845 |
Now, we try dividing 256,245,845 by 3:
256,245,845 ÷ 3 = 85,415,281.6667
If the quotient is a whole number, then 3 and 85,415,281.6667 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 | 256,245,845 | |
| -1 | -256,245,845 |
Let's try dividing by 4:
256,245,845 ÷ 4 = 64,061,461.25
If the quotient is a whole number, then 4 and 64,061,461.25 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 | 256,245,845 | |
| -1 | 256,245,845 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 31 | 85 | 155 | 527 | 961 | 2,635 | 3,137 | 4,805 | 15,685 | 16,337 | 53,329 | 81,685 | 97,247 | 266,645 | 486,235 | 1,653,199 | 3,014,657 | 8,265,995 | 15,073,285 | 51,249,169 | 256,245,845 |
| -1 | -5 | -17 | -31 | -85 | -155 | -527 | -961 | -2,635 | -3,137 | -4,805 | -15,685 | -16,337 | -53,329 | -81,685 | -97,247 | -266,645 | -486,235 | -1,653,199 | -3,014,657 | -8,265,995 | -15,073,285 | -51,249,169 | -256,245,845 |
Here are some more numbers to try:
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