A:
Positive:
1 x 3072340855 x 6144681719 x 1617021595 x 3234043157 x 1956905785 x 3913812983 x 10299514915 x 20599
Negative:
-1 x -307234085-5 x -61446817-19 x -16170215-95 x -3234043-157 x -1956905-785 x -391381-2983 x -102995-14915 x -20599
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 307,234,085, 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 | 307,234,085 | |
| -1 | -307,234,085 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 307,234,085.
Example:
1 x 307,234,085 = 307,234,085
and
-1 x -307,234,085 = 307,234,085
Notice both answers equal 307,234,085
With that explanation out of the way, let's continue. Next, we take the number 307,234,085 and divide it by 2:
307,234,085 ÷ 2 = 153,617,042.5
If the quotient is a whole number, then 2 and 153,617,042.5 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 | 307,234,085 | |
| -1 | -307,234,085 |
Now, we try dividing 307,234,085 by 3:
307,234,085 ÷ 3 = 102,411,361.6667
If the quotient is a whole number, then 3 and 102,411,361.6667 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 | 307,234,085 | |
| -1 | -307,234,085 |
Let's try dividing by 4:
307,234,085 ÷ 4 = 76,808,521.25
If the quotient is a whole number, then 4 and 76,808,521.25 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 | 307,234,085 | |
| -1 | 307,234,085 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 157 | 785 | 2,983 | 14,915 | 20,599 | 102,995 | 391,381 | 1,956,905 | 3,234,043 | 16,170,215 | 61,446,817 | 307,234,085 |
| -1 | -5 | -19 | -95 | -157 | -785 | -2,983 | -14,915 | -20,599 | -102,995 | -391,381 | -1,956,905 | -3,234,043 | -16,170,215 | -61,446,817 | -307,234,085 |
Here are some more numbers to try:
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