A:
Positive:
1 x 3074851455 x 6149702911 x 2795319555 x 5590639823 x 3736154115 x 747236793 x 452659053 x 33965
Negative:
-1 x -307485145-5 x -61497029-11 x -27953195-55 x -5590639-823 x -373615-4115 x -74723-6793 x -45265-9053 x -33965
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 307,485,145, 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 | 307,485,145 | |
| -1 | -307,485,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 307,485,145.
Example:
1 x 307,485,145 = 307,485,145
and
-1 x -307,485,145 = 307,485,145
Notice both answers equal 307,485,145
With that explanation out of the way, let's continue. Next, we take the number 307,485,145 and divide it by 2:
307,485,145 ÷ 2 = 153,742,572.5
If the quotient is a whole number, then 2 and 153,742,572.5 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 | 307,485,145 | |
| -1 | -307,485,145 |
Now, we try dividing 307,485,145 by 3:
307,485,145 ÷ 3 = 102,495,048.3333
If the quotient is a whole number, then 3 and 102,495,048.3333 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 | 307,485,145 | |
| -1 | -307,485,145 |
Let's try dividing by 4:
307,485,145 ÷ 4 = 76,871,286.25
If the quotient is a whole number, then 4 and 76,871,286.25 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 | 307,485,145 | |
| -1 | 307,485,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 823 | 4,115 | 6,793 | 9,053 | 33,965 | 45,265 | 74,723 | 373,615 | 5,590,639 | 27,953,195 | 61,497,029 | 307,485,145 |
| -1 | -5 | -11 | -55 | -823 | -4,115 | -6,793 | -9,053 | -33,965 | -45,265 | -74,723 | -373,615 | -5,590,639 | -27,953,195 | -61,497,029 | -307,485,145 |
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