A:
Positive:
1 x 405212055 x 810424119 x 213269573 x 55508595 x 426539365 x 1110171387 x 292155843 x 6935
Negative:
-1 x -40521205-5 x -8104241-19 x -2132695-73 x -555085-95 x -426539-365 x -111017-1387 x -29215-5843 x -6935
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 40,521,205, 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 | 40,521,205 | |
| -1 | -40,521,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,521,205.
Example:
1 x 40,521,205 = 40,521,205
and
-1 x -40,521,205 = 40,521,205
Notice both answers equal 40,521,205
With that explanation out of the way, let's continue. Next, we take the number 40,521,205 and divide it by 2:
40,521,205 ÷ 2 = 20,260,602.5
If the quotient is a whole number, then 2 and 20,260,602.5 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 | 40,521,205 | |
| -1 | -40,521,205 |
Now, we try dividing 40,521,205 by 3:
40,521,205 ÷ 3 = 13,507,068.3333
If the quotient is a whole number, then 3 and 13,507,068.3333 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 | 40,521,205 | |
| -1 | -40,521,205 |
Let's try dividing by 4:
40,521,205 ÷ 4 = 10,130,301.25
If the quotient is a whole number, then 4 and 10,130,301.25 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 | 40,521,205 | |
| -1 | 40,521,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 73 | 95 | 365 | 1,387 | 5,843 | 6,935 | 29,215 | 111,017 | 426,539 | 555,085 | 2,132,695 | 8,104,241 | 40,521,205 |
| -1 | -5 | -19 | -73 | -95 | -365 | -1,387 | -5,843 | -6,935 | -29,215 | -111,017 | -426,539 | -555,085 | -2,132,695 | -8,104,241 | -40,521,205 |
Here are some more numbers to try:
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