A:
Positive:
1 x 302900155 x 60580037 x 432714535 x 865429137 x 221095685 x 44219959 x 315854795 x 6317
Negative:
-1 x -30290015-5 x -6058003-7 x -4327145-35 x -865429-137 x -221095-685 x -44219-959 x -31585-4795 x -6317
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 30,290,015, 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 | 30,290,015 | |
| -1 | -30,290,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,290,015.
Example:
1 x 30,290,015 = 30,290,015
and
-1 x -30,290,015 = 30,290,015
Notice both answers equal 30,290,015
With that explanation out of the way, let's continue. Next, we take the number 30,290,015 and divide it by 2:
30,290,015 ÷ 2 = 15,145,007.5
If the quotient is a whole number, then 2 and 15,145,007.5 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 | 30,290,015 | |
| -1 | -30,290,015 |
Now, we try dividing 30,290,015 by 3:
30,290,015 ÷ 3 = 10,096,671.6667
If the quotient is a whole number, then 3 and 10,096,671.6667 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 | 30,290,015 | |
| -1 | -30,290,015 |
Let's try dividing by 4:
30,290,015 ÷ 4 = 7,572,503.75
If the quotient is a whole number, then 4 and 7,572,503.75 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 | 30,290,015 | |
| -1 | 30,290,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 137 | 685 | 959 | 4,795 | 6,317 | 31,585 | 44,219 | 221,095 | 865,429 | 4,327,145 | 6,058,003 | 30,290,015 |
| -1 | -5 | -7 | -35 | -137 | -685 | -959 | -4,795 | -6,317 | -31,585 | -44,219 | -221,095 | -865,429 | -4,327,145 | -6,058,003 | -30,290,015 |
Here are some more numbers to try:
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