A:
Positive:
1 x 7692398919 x 404863131 x 248141961 x 1261049589 x 1306011159 x 663711891 x 406792141 x 35929
Negative:
-1 x -76923989-19 x -4048631-31 x -2481419-61 x -1261049-589 x -130601-1159 x -66371-1891 x -40679-2141 x -35929
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 76,923,989, 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 | 76,923,989 | |
| -1 | -76,923,989 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 76,923,989.
Example:
1 x 76,923,989 = 76,923,989
and
-1 x -76,923,989 = 76,923,989
Notice both answers equal 76,923,989
With that explanation out of the way, let's continue. Next, we take the number 76,923,989 and divide it by 2:
76,923,989 ÷ 2 = 38,461,994.5
If the quotient is a whole number, then 2 and 38,461,994.5 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 | 76,923,989 | |
| -1 | -76,923,989 |
Now, we try dividing 76,923,989 by 3:
76,923,989 ÷ 3 = 25,641,329.6667
If the quotient is a whole number, then 3 and 25,641,329.6667 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 | 76,923,989 | |
| -1 | -76,923,989 |
Let's try dividing by 4:
76,923,989 ÷ 4 = 19,230,997.25
If the quotient is a whole number, then 4 and 19,230,997.25 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 | 76,923,989 | |
| -1 | 76,923,989 |
If you did it right, you will end up with this table:
| 1 | 19 | 31 | 61 | 589 | 1,159 | 1,891 | 2,141 | 35,929 | 40,679 | 66,371 | 130,601 | 1,261,049 | 2,481,419 | 4,048,631 | 76,923,989 |
| -1 | -19 | -31 | -61 | -589 | -1,159 | -1,891 | -2,141 | -35,929 | -40,679 | -66,371 | -130,601 | -1,261,049 | -2,481,419 | -4,048,631 | -76,923,989 |
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