A:
Positive:
1 x 307082755 x 614165513 x 236217519 x 161622525 x 122833165 x 47243595 x 323245247 x 124325325 x 94487475 x 646491235 x 248654973 x 6175
Negative:
-1 x -30708275-5 x -6141655-13 x -2362175-19 x -1616225-25 x -1228331-65 x -472435-95 x -323245-247 x -124325-325 x -94487-475 x -64649-1235 x -24865-4973 x -6175
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 30,708,275, 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 | 30,708,275 | |
| -1 | -30,708,275 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,708,275.
Example:
1 x 30,708,275 = 30,708,275
and
-1 x -30,708,275 = 30,708,275
Notice both answers equal 30,708,275
With that explanation out of the way, let's continue. Next, we take the number 30,708,275 and divide it by 2:
30,708,275 ÷ 2 = 15,354,137.5
If the quotient is a whole number, then 2 and 15,354,137.5 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 | 30,708,275 | |
| -1 | -30,708,275 |
Now, we try dividing 30,708,275 by 3:
30,708,275 ÷ 3 = 10,236,091.6667
If the quotient is a whole number, then 3 and 10,236,091.6667 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 | 30,708,275 | |
| -1 | -30,708,275 |
Let's try dividing by 4:
30,708,275 ÷ 4 = 7,677,068.75
If the quotient is a whole number, then 4 and 7,677,068.75 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 | 30,708,275 | |
| -1 | 30,708,275 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 19 | 25 | 65 | 95 | 247 | 325 | 475 | 1,235 | 4,973 | 6,175 | 24,865 | 64,649 | 94,487 | 124,325 | 323,245 | 472,435 | 1,228,331 | 1,616,225 | 2,362,175 | 6,141,655 | 30,708,275 |
| -1 | -5 | -13 | -19 | -25 | -65 | -95 | -247 | -325 | -475 | -1,235 | -4,973 | -6,175 | -24,865 | -64,649 | -94,487 | -124,325 | -323,245 | -472,435 | -1,228,331 | -1,616,225 | -2,362,175 | -6,141,655 | -30,708,275 |
Here are some more numbers to try:
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