A:
Positive:
1 x 6158155 x 12316329 x 2123531 x 19865137 x 4495145 x 4247155 x 3973685 x 899
Negative:
-1 x -615815-5 x -123163-29 x -21235-31 x -19865-137 x -4495-145 x -4247-155 x -3973-685 x -899
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 615,815, 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 | 615,815 | |
| -1 | -615,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 615,815.
Example:
1 x 615,815 = 615,815
and
-1 x -615,815 = 615,815
Notice both answers equal 615,815
With that explanation out of the way, let's continue. Next, we take the number 615,815 and divide it by 2:
615,815 ÷ 2 = 307,907.5
If the quotient is a whole number, then 2 and 307,907.5 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 | 615,815 | |
| -1 | -615,815 |
Now, we try dividing 615,815 by 3:
615,815 ÷ 3 = 205,271.6667
If the quotient is a whole number, then 3 and 205,271.6667 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 | 615,815 | |
| -1 | -615,815 |
Let's try dividing by 4:
615,815 ÷ 4 = 153,953.75
If the quotient is a whole number, then 4 and 153,953.75 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 | 615,815 | |
| -1 | 615,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 31 | 137 | 145 | 155 | 685 | 899 | 3,973 | 4,247 | 4,495 | 19,865 | 21,235 | 123,163 | 615,815 |
| -1 | -5 | -29 | -31 | -137 | -145 | -155 | -685 | -899 | -3,973 | -4,247 | -4,495 | -19,865 | -21,235 | -123,163 | -615,815 |
Here are some more numbers to try:
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