A:
Positive:
1 x 301856655 x 603713329 x 1040885145 x 208177179 x 168635895 x 337271163 x 259555191 x 5815
Negative:
-1 x -30185665-5 x -6037133-29 x -1040885-145 x -208177-179 x -168635-895 x -33727-1163 x -25955-5191 x -5815
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 30,185,665, 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 | 30,185,665 | |
| -1 | -30,185,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,185,665.
Example:
1 x 30,185,665 = 30,185,665
and
-1 x -30,185,665 = 30,185,665
Notice both answers equal 30,185,665
With that explanation out of the way, let's continue. Next, we take the number 30,185,665 and divide it by 2:
30,185,665 ÷ 2 = 15,092,832.5
If the quotient is a whole number, then 2 and 15,092,832.5 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 | 30,185,665 | |
| -1 | -30,185,665 |
Now, we try dividing 30,185,665 by 3:
30,185,665 ÷ 3 = 10,061,888.3333
If the quotient is a whole number, then 3 and 10,061,888.3333 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 | 30,185,665 | |
| -1 | -30,185,665 |
Let's try dividing by 4:
30,185,665 ÷ 4 = 7,546,416.25
If the quotient is a whole number, then 4 and 7,546,416.25 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 | 30,185,665 | |
| -1 | 30,185,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 145 | 179 | 895 | 1,163 | 5,191 | 5,815 | 25,955 | 33,727 | 168,635 | 208,177 | 1,040,885 | 6,037,133 | 30,185,665 |
| -1 | -5 | -29 | -145 | -179 | -895 | -1,163 | -5,191 | -5,815 | -25,955 | -33,727 | -168,635 | -208,177 | -1,040,885 | -6,037,133 | -30,185,665 |
Here are some more numbers to try:
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