A:
Positive:
1 x 307716297 x 4395947149 x 206521163 x 188783181 x 1700091043 x 295031141 x 269691267 x 24287
Negative:
-1 x -30771629-7 x -4395947-149 x -206521-163 x -188783-181 x -170009-1043 x -29503-1141 x -26969-1267 x -24287
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 30,771,629, 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 | 30,771,629 | |
| -1 | -30,771,629 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,771,629.
Example:
1 x 30,771,629 = 30,771,629
and
-1 x -30,771,629 = 30,771,629
Notice both answers equal 30,771,629
With that explanation out of the way, let's continue. Next, we take the number 30,771,629 and divide it by 2:
30,771,629 ÷ 2 = 15,385,814.5
If the quotient is a whole number, then 2 and 15,385,814.5 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 | 30,771,629 | |
| -1 | -30,771,629 |
Now, we try dividing 30,771,629 by 3:
30,771,629 ÷ 3 = 10,257,209.6667
If the quotient is a whole number, then 3 and 10,257,209.6667 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 | 30,771,629 | |
| -1 | -30,771,629 |
Let's try dividing by 4:
30,771,629 ÷ 4 = 7,692,907.25
If the quotient is a whole number, then 4 and 7,692,907.25 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 | 30,771,629 | |
| -1 | 30,771,629 |
If you did it right, you will end up with this table:
| 1 | 7 | 149 | 163 | 181 | 1,043 | 1,141 | 1,267 | 24,287 | 26,969 | 29,503 | 170,009 | 188,783 | 206,521 | 4,395,947 | 30,771,629 |
| -1 | -7 | -149 | -163 | -181 | -1,043 | -1,141 | -1,267 | -24,287 | -26,969 | -29,503 | -170,009 | -188,783 | -206,521 | -4,395,947 | -30,771,629 |
Here are some more numbers to try:
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