A:
Positive:
1 x 6151242355 x 12302484711 x 5592038555 x 11184077317 x 19404551585 x 3880913487 x 17640517435 x 35281
Negative:
-1 x -615124235-5 x -123024847-11 x -55920385-55 x -11184077-317 x -1940455-1585 x -388091-3487 x -176405-17435 x -35281
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 615,124,235, 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 | 615,124,235 | |
| -1 | -615,124,235 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 615,124,235.
Example:
1 x 615,124,235 = 615,124,235
and
-1 x -615,124,235 = 615,124,235
Notice both answers equal 615,124,235
With that explanation out of the way, let's continue. Next, we take the number 615,124,235 and divide it by 2:
615,124,235 ÷ 2 = 307,562,117.5
If the quotient is a whole number, then 2 and 307,562,117.5 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 | 615,124,235 | |
| -1 | -615,124,235 |
Now, we try dividing 615,124,235 by 3:
615,124,235 ÷ 3 = 205,041,411.6667
If the quotient is a whole number, then 3 and 205,041,411.6667 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 | 615,124,235 | |
| -1 | -615,124,235 |
Let's try dividing by 4:
615,124,235 ÷ 4 = 153,781,058.75
If the quotient is a whole number, then 4 and 153,781,058.75 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 | 615,124,235 | |
| -1 | 615,124,235 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 317 | 1,585 | 3,487 | 17,435 | 35,281 | 176,405 | 388,091 | 1,940,455 | 11,184,077 | 55,920,385 | 123,024,847 | 615,124,235 |
| -1 | -5 | -11 | -55 | -317 | -1,585 | -3,487 | -17,435 | -35,281 | -176,405 | -388,091 | -1,940,455 | -11,184,077 | -55,920,385 | -123,024,847 | -615,124,235 |
Here are some more numbers to try:
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