A:
Positive:
1 x 166704055 x 333408131 x 537755131 x 127255155 x 107551655 x 25451821 x 203054061 x 4105
Negative:
-1 x -16670405-5 x -3334081-31 x -537755-131 x -127255-155 x -107551-655 x -25451-821 x -20305-4061 x -4105
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 16,670,405, 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 | 16,670,405 | |
| -1 | -16,670,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,670,405.
Example:
1 x 16,670,405 = 16,670,405
and
-1 x -16,670,405 = 16,670,405
Notice both answers equal 16,670,405
With that explanation out of the way, let's continue. Next, we take the number 16,670,405 and divide it by 2:
16,670,405 ÷ 2 = 8,335,202.5
If the quotient is a whole number, then 2 and 8,335,202.5 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 | 16,670,405 | |
| -1 | -16,670,405 |
Now, we try dividing 16,670,405 by 3:
16,670,405 ÷ 3 = 5,556,801.6667
If the quotient is a whole number, then 3 and 5,556,801.6667 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 | 16,670,405 | |
| -1 | -16,670,405 |
Let's try dividing by 4:
16,670,405 ÷ 4 = 4,167,601.25
If the quotient is a whole number, then 4 and 4,167,601.25 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 | 16,670,405 | |
| -1 | 16,670,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 131 | 155 | 655 | 821 | 4,061 | 4,105 | 20,305 | 25,451 | 107,551 | 127,255 | 537,755 | 3,334,081 | 16,670,405 |
| -1 | -5 | -31 | -131 | -155 | -655 | -821 | -4,061 | -4,105 | -20,305 | -25,451 | -107,551 | -127,255 | -537,755 | -3,334,081 | -16,670,405 |
Here are some more numbers to try:
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