A:
Positive:
1 x 821202555 x 164240517 x 1173146535 x 234629373 x 1124935365 x 224987511 x 1607052555 x 32141
Negative:
-1 x -82120255-5 x -16424051-7 x -11731465-35 x -2346293-73 x -1124935-365 x -224987-511 x -160705-2555 x -32141
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 82,120,255, 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 | 82,120,255 | |
| -1 | -82,120,255 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 82,120,255.
Example:
1 x 82,120,255 = 82,120,255
and
-1 x -82,120,255 = 82,120,255
Notice both answers equal 82,120,255
With that explanation out of the way, let's continue. Next, we take the number 82,120,255 and divide it by 2:
82,120,255 ÷ 2 = 41,060,127.5
If the quotient is a whole number, then 2 and 41,060,127.5 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 | 82,120,255 | |
| -1 | -82,120,255 |
Now, we try dividing 82,120,255 by 3:
82,120,255 ÷ 3 = 27,373,418.3333
If the quotient is a whole number, then 3 and 27,373,418.3333 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 | 82,120,255 | |
| -1 | -82,120,255 |
Let's try dividing by 4:
82,120,255 ÷ 4 = 20,530,063.75
If the quotient is a whole number, then 4 and 20,530,063.75 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 | 82,120,255 | |
| -1 | 82,120,255 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 73 | 365 | 511 | 2,555 | 32,141 | 160,705 | 224,987 | 1,124,935 | 2,346,293 | 11,731,465 | 16,424,051 | 82,120,255 |
| -1 | -5 | -7 | -35 | -73 | -365 | -511 | -2,555 | -32,141 | -160,705 | -224,987 | -1,124,935 | -2,346,293 | -11,731,465 | -16,424,051 | -82,120,255 |
Here are some more numbers to try:
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