A:
Positive:
1 x 401352055 x 802704111 x 364865555 x 72973197 x 413765485 x 827531067 x 376155335 x 7523
Negative:
-1 x -40135205-5 x -8027041-11 x -3648655-55 x -729731-97 x -413765-485 x -82753-1067 x -37615-5335 x -7523
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 40,135,205, 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 | 40,135,205 | |
| -1 | -40,135,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,135,205.
Example:
1 x 40,135,205 = 40,135,205
and
-1 x -40,135,205 = 40,135,205
Notice both answers equal 40,135,205
With that explanation out of the way, let's continue. Next, we take the number 40,135,205 and divide it by 2:
40,135,205 ÷ 2 = 20,067,602.5
If the quotient is a whole number, then 2 and 20,067,602.5 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 | 40,135,205 | |
| -1 | -40,135,205 |
Now, we try dividing 40,135,205 by 3:
40,135,205 ÷ 3 = 13,378,401.6667
If the quotient is a whole number, then 3 and 13,378,401.6667 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 | 40,135,205 | |
| -1 | -40,135,205 |
Let's try dividing by 4:
40,135,205 ÷ 4 = 10,033,801.25
If the quotient is a whole number, then 4 and 10,033,801.25 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 | 40,135,205 | |
| -1 | 40,135,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 97 | 485 | 1,067 | 5,335 | 7,523 | 37,615 | 82,753 | 413,765 | 729,731 | 3,648,655 | 8,027,041 | 40,135,205 |
| -1 | -5 | -11 | -55 | -97 | -485 | -1,067 | -5,335 | -7,523 | -37,615 | -82,753 | -413,765 | -729,731 | -3,648,655 | -8,027,041 | -40,135,205 |
Here are some more numbers to try:
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