A:
Positive:
1 x 2562084255 x 5124168511 x 2329167525 x 1024833755 x 4658335121 x 2117425275 x 931667605 x 4234853025 x 84697
Negative:
-1 x -256208425-5 x -51241685-11 x -23291675-25 x -10248337-55 x -4658335-121 x -2117425-275 x -931667-605 x -423485-3025 x -84697
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 256,208,425, 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 | 256,208,425 | |
| -1 | -256,208,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 256,208,425.
Example:
1 x 256,208,425 = 256,208,425
and
-1 x -256,208,425 = 256,208,425
Notice both answers equal 256,208,425
With that explanation out of the way, let's continue. Next, we take the number 256,208,425 and divide it by 2:
256,208,425 ÷ 2 = 128,104,212.5
If the quotient is a whole number, then 2 and 128,104,212.5 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 | 256,208,425 | |
| -1 | -256,208,425 |
Now, we try dividing 256,208,425 by 3:
256,208,425 ÷ 3 = 85,402,808.3333
If the quotient is a whole number, then 3 and 85,402,808.3333 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 | 256,208,425 | |
| -1 | -256,208,425 |
Let's try dividing by 4:
256,208,425 ÷ 4 = 64,052,106.25
If the quotient is a whole number, then 4 and 64,052,106.25 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 | 256,208,425 | |
| -1 | 256,208,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 121 | 275 | 605 | 3,025 | 84,697 | 423,485 | 931,667 | 2,117,425 | 4,658,335 | 10,248,337 | 23,291,675 | 51,241,685 | 256,208,425 |
| -1 | -5 | -11 | -25 | -55 | -121 | -275 | -605 | -3,025 | -84,697 | -423,485 | -931,667 | -2,117,425 | -4,658,335 | -10,248,337 | -23,291,675 | -51,241,685 | -256,208,425 |
Here are some more numbers to try:
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