A:
Positive:
1 x 300877155 x 60175437 x 429824535 x 85964949 x 614035227 x 132545245 x 122807541 x 556151135 x 265091589 x 189352705 x 111233787 x 7945
Negative:
-1 x -30087715-5 x -6017543-7 x -4298245-35 x -859649-49 x -614035-227 x -132545-245 x -122807-541 x -55615-1135 x -26509-1589 x -18935-2705 x -11123-3787 x -7945
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 30,087,715, 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 | 30,087,715 | |
| -1 | -30,087,715 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,087,715.
Example:
1 x 30,087,715 = 30,087,715
and
-1 x -30,087,715 = 30,087,715
Notice both answers equal 30,087,715
With that explanation out of the way, let's continue. Next, we take the number 30,087,715 and divide it by 2:
30,087,715 ÷ 2 = 15,043,857.5
If the quotient is a whole number, then 2 and 15,043,857.5 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 | 30,087,715 | |
| -1 | -30,087,715 |
Now, we try dividing 30,087,715 by 3:
30,087,715 ÷ 3 = 10,029,238.3333
If the quotient is a whole number, then 3 and 10,029,238.3333 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 | 30,087,715 | |
| -1 | -30,087,715 |
Let's try dividing by 4:
30,087,715 ÷ 4 = 7,521,928.75
If the quotient is a whole number, then 4 and 7,521,928.75 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 | 30,087,715 | |
| -1 | 30,087,715 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 227 | 245 | 541 | 1,135 | 1,589 | 2,705 | 3,787 | 7,945 | 11,123 | 18,935 | 26,509 | 55,615 | 122,807 | 132,545 | 614,035 | 859,649 | 4,298,245 | 6,017,543 | 30,087,715 |
| -1 | -5 | -7 | -35 | -49 | -227 | -245 | -541 | -1,135 | -1,589 | -2,705 | -3,787 | -7,945 | -11,123 | -18,935 | -26,509 | -55,615 | -122,807 | -132,545 | -614,035 | -859,649 | -4,298,245 | -6,017,543 | -30,087,715 |
Here are some more numbers to try:
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