A:
Positive:
1 x 8181662455 x 16363324913 x 6293586565 x 125871732711 x 3017954643 x 17621513555 x 6035923215 x 35243
Negative:
-1 x -818166245-5 x -163633249-13 x -62935865-65 x -12587173-2711 x -301795-4643 x -176215-13555 x -60359-23215 x -35243
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 818,166,245, 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 | 818,166,245 | |
| -1 | -818,166,245 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 818,166,245.
Example:
1 x 818,166,245 = 818,166,245
and
-1 x -818,166,245 = 818,166,245
Notice both answers equal 818,166,245
With that explanation out of the way, let's continue. Next, we take the number 818,166,245 and divide it by 2:
818,166,245 ÷ 2 = 409,083,122.5
If the quotient is a whole number, then 2 and 409,083,122.5 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 | 818,166,245 | |
| -1 | -818,166,245 |
Now, we try dividing 818,166,245 by 3:
818,166,245 ÷ 3 = 272,722,081.6667
If the quotient is a whole number, then 3 and 272,722,081.6667 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 | 818,166,245 | |
| -1 | -818,166,245 |
Let's try dividing by 4:
818,166,245 ÷ 4 = 204,541,561.25
If the quotient is a whole number, then 4 and 204,541,561.25 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 | 818,166,245 | |
| -1 | 818,166,245 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 2,711 | 4,643 | 13,555 | 23,215 | 35,243 | 60,359 | 176,215 | 301,795 | 12,587,173 | 62,935,865 | 163,633,249 | 818,166,245 |
| -1 | -5 | -13 | -65 | -2,711 | -4,643 | -13,555 | -23,215 | -35,243 | -60,359 | -176,215 | -301,795 | -12,587,173 | -62,935,865 | -163,633,249 | -818,166,245 |
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