A:
Positive:
1 x 404066055 x 808132147 x 859715139 x 290695235 x 171943695 x 581391237 x 326656185 x 6533
Negative:
-1 x -40406605-5 x -8081321-47 x -859715-139 x -290695-235 x -171943-695 x -58139-1237 x -32665-6185 x -6533
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 40,406,605, 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 | 40,406,605 | |
| -1 | -40,406,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,406,605.
Example:
1 x 40,406,605 = 40,406,605
and
-1 x -40,406,605 = 40,406,605
Notice both answers equal 40,406,605
With that explanation out of the way, let's continue. Next, we take the number 40,406,605 and divide it by 2:
40,406,605 ÷ 2 = 20,203,302.5
If the quotient is a whole number, then 2 and 20,203,302.5 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 | 40,406,605 | |
| -1 | -40,406,605 |
Now, we try dividing 40,406,605 by 3:
40,406,605 ÷ 3 = 13,468,868.3333
If the quotient is a whole number, then 3 and 13,468,868.3333 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 | 40,406,605 | |
| -1 | -40,406,605 |
Let's try dividing by 4:
40,406,605 ÷ 4 = 10,101,651.25
If the quotient is a whole number, then 4 and 10,101,651.25 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 | 40,406,605 | |
| -1 | 40,406,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 139 | 235 | 695 | 1,237 | 6,185 | 6,533 | 32,665 | 58,139 | 171,943 | 290,695 | 859,715 | 8,081,321 | 40,406,605 |
| -1 | -5 | -47 | -139 | -235 | -695 | -1,237 | -6,185 | -6,533 | -32,665 | -58,139 | -171,943 | -290,695 | -859,715 | -8,081,321 | -40,406,605 |
Here are some more numbers to try:
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