A:
Positive:
1 x 306080055 x 612160131 x 987355155 x 197471181 x 169105905 x 338211091 x 280555455 x 5611
Negative:
-1 x -30608005-5 x -6121601-31 x -987355-155 x -197471-181 x -169105-905 x -33821-1091 x -28055-5455 x -5611
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 30,608,005, 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 | 30,608,005 | |
| -1 | -30,608,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,608,005.
Example:
1 x 30,608,005 = 30,608,005
and
-1 x -30,608,005 = 30,608,005
Notice both answers equal 30,608,005
With that explanation out of the way, let's continue. Next, we take the number 30,608,005 and divide it by 2:
30,608,005 ÷ 2 = 15,304,002.5
If the quotient is a whole number, then 2 and 15,304,002.5 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 | 30,608,005 | |
| -1 | -30,608,005 |
Now, we try dividing 30,608,005 by 3:
30,608,005 ÷ 3 = 10,202,668.3333
If the quotient is a whole number, then 3 and 10,202,668.3333 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 | 30,608,005 | |
| -1 | -30,608,005 |
Let's try dividing by 4:
30,608,005 ÷ 4 = 7,652,001.25
If the quotient is a whole number, then 4 and 7,652,001.25 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 | 30,608,005 | |
| -1 | 30,608,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 155 | 181 | 905 | 1,091 | 5,455 | 5,611 | 28,055 | 33,821 | 169,105 | 197,471 | 987,355 | 6,121,601 | 30,608,005 |
| -1 | -5 | -31 | -155 | -181 | -905 | -1,091 | -5,455 | -5,611 | -28,055 | -33,821 | -169,105 | -197,471 | -987,355 | -6,121,601 | -30,608,005 |
Here are some more numbers to try:
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