A:
Positive:
1 x 3075157255 x 6150314511 x 2795597525 x 1230062955 x 5591195275 x 1118239751 x 4094751489 x 2065253755 x 818957445 x 413058261 x 3722516379 x 18775
Negative:
-1 x -307515725-5 x -61503145-11 x -27955975-25 x -12300629-55 x -5591195-275 x -1118239-751 x -409475-1489 x -206525-3755 x -81895-7445 x -41305-8261 x -37225-16379 x -18775
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 307,515,725, 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 | 307,515,725 | |
| -1 | -307,515,725 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 307,515,725.
Example:
1 x 307,515,725 = 307,515,725
and
-1 x -307,515,725 = 307,515,725
Notice both answers equal 307,515,725
With that explanation out of the way, let's continue. Next, we take the number 307,515,725 and divide it by 2:
307,515,725 ÷ 2 = 153,757,862.5
If the quotient is a whole number, then 2 and 153,757,862.5 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 | 307,515,725 | |
| -1 | -307,515,725 |
Now, we try dividing 307,515,725 by 3:
307,515,725 ÷ 3 = 102,505,241.6667
If the quotient is a whole number, then 3 and 102,505,241.6667 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 | 307,515,725 | |
| -1 | -307,515,725 |
Let's try dividing by 4:
307,515,725 ÷ 4 = 76,878,931.25
If the quotient is a whole number, then 4 and 76,878,931.25 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 | 307,515,725 | |
| -1 | 307,515,725 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 275 | 751 | 1,489 | 3,755 | 7,445 | 8,261 | 16,379 | 18,775 | 37,225 | 41,305 | 81,895 | 206,525 | 409,475 | 1,118,239 | 5,591,195 | 12,300,629 | 27,955,975 | 61,503,145 | 307,515,725 |
| -1 | -5 | -11 | -25 | -55 | -275 | -751 | -1,489 | -3,755 | -7,445 | -8,261 | -16,379 | -18,775 | -37,225 | -41,305 | -81,895 | -206,525 | -409,475 | -1,118,239 | -5,591,195 | -12,300,629 | -27,955,975 | -61,503,145 | -307,515,725 |
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