A:
Positive:
1 x 404067055 x 808134117 x 237686561 x 66240585 x 475373305 x 1324811037 x 389655185 x 7793
Negative:
-1 x -40406705-5 x -8081341-17 x -2376865-61 x -662405-85 x -475373-305 x -132481-1037 x -38965-5185 x -7793
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 40,406,705, 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 | 40,406,705 | |
| -1 | -40,406,705 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,406,705.
Example:
1 x 40,406,705 = 40,406,705
and
-1 x -40,406,705 = 40,406,705
Notice both answers equal 40,406,705
With that explanation out of the way, let's continue. Next, we take the number 40,406,705 and divide it by 2:
40,406,705 ÷ 2 = 20,203,352.5
If the quotient is a whole number, then 2 and 20,203,352.5 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 | 40,406,705 | |
| -1 | -40,406,705 |
Now, we try dividing 40,406,705 by 3:
40,406,705 ÷ 3 = 13,468,901.6667
If the quotient is a whole number, then 3 and 13,468,901.6667 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 | 40,406,705 | |
| -1 | -40,406,705 |
Let's try dividing by 4:
40,406,705 ÷ 4 = 10,101,676.25
If the quotient is a whole number, then 4 and 10,101,676.25 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 | 40,406,705 | |
| -1 | 40,406,705 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 61 | 85 | 305 | 1,037 | 5,185 | 7,793 | 38,965 | 132,481 | 475,373 | 662,405 | 2,376,865 | 8,081,341 | 40,406,705 |
| -1 | -5 | -17 | -61 | -85 | -305 | -1,037 | -5,185 | -7,793 | -38,965 | -132,481 | -475,373 | -662,405 | -2,376,865 | -8,081,341 | -40,406,705 |
Here are some more numbers to try:
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