A:
Positive:
1 x 1030404055 x 2060808113 x 792618565 x 1585237383 x 2690351915 x 538074139 x 248954979 x 20695
Negative:
-1 x -103040405-5 x -20608081-13 x -7926185-65 x -1585237-383 x -269035-1915 x -53807-4139 x -24895-4979 x -20695
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 103,040,405, 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 | 103,040,405 | |
| -1 | -103,040,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 103,040,405.
Example:
1 x 103,040,405 = 103,040,405
and
-1 x -103,040,405 = 103,040,405
Notice both answers equal 103,040,405
With that explanation out of the way, let's continue. Next, we take the number 103,040,405 and divide it by 2:
103,040,405 ÷ 2 = 51,520,202.5
If the quotient is a whole number, then 2 and 51,520,202.5 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 | 103,040,405 | |
| -1 | -103,040,405 |
Now, we try dividing 103,040,405 by 3:
103,040,405 ÷ 3 = 34,346,801.6667
If the quotient is a whole number, then 3 and 34,346,801.6667 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 | 103,040,405 | |
| -1 | -103,040,405 |
Let's try dividing by 4:
103,040,405 ÷ 4 = 25,760,101.25
If the quotient is a whole number, then 4 and 25,760,101.25 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 | 103,040,405 | |
| -1 | 103,040,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 383 | 1,915 | 4,139 | 4,979 | 20,695 | 24,895 | 53,807 | 269,035 | 1,585,237 | 7,926,185 | 20,608,081 | 103,040,405 |
| -1 | -5 | -13 | -65 | -383 | -1,915 | -4,139 | -4,979 | -20,695 | -24,895 | -53,807 | -269,035 | -1,585,237 | -7,926,185 | -20,608,081 | -103,040,405 |
Here are some more numbers to try:
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