A:
Positive:
1 x 307575055 x 615150117 x 180926547 x 65441585 x 361853235 x 130883799 x 384953995 x 7699
Negative:
-1 x -30757505-5 x -6151501-17 x -1809265-47 x -654415-85 x -361853-235 x -130883-799 x -38495-3995 x -7699
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 30,757,505, 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 | 30,757,505 | |
| -1 | -30,757,505 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,757,505.
Example:
1 x 30,757,505 = 30,757,505
and
-1 x -30,757,505 = 30,757,505
Notice both answers equal 30,757,505
With that explanation out of the way, let's continue. Next, we take the number 30,757,505 and divide it by 2:
30,757,505 ÷ 2 = 15,378,752.5
If the quotient is a whole number, then 2 and 15,378,752.5 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 | 30,757,505 | |
| -1 | -30,757,505 |
Now, we try dividing 30,757,505 by 3:
30,757,505 ÷ 3 = 10,252,501.6667
If the quotient is a whole number, then 3 and 10,252,501.6667 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 | 30,757,505 | |
| -1 | -30,757,505 |
Let's try dividing by 4:
30,757,505 ÷ 4 = 7,689,376.25
If the quotient is a whole number, then 4 and 7,689,376.25 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 | 30,757,505 | |
| -1 | 30,757,505 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 47 | 85 | 235 | 799 | 3,995 | 7,699 | 38,495 | 130,883 | 361,853 | 654,415 | 1,809,265 | 6,151,501 | 30,757,505 |
| -1 | -5 | -17 | -47 | -85 | -235 | -799 | -3,995 | -7,699 | -38,495 | -130,883 | -361,853 | -654,415 | -1,809,265 | -6,151,501 | -30,757,505 |
Here are some more numbers to try:
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