A:
Positive:
1 x 16664055 x 33328113 x 12818531 x 5375565 x 25637155 x 10751403 x 4135827 x 2015
Negative:
-1 x -1666405-5 x -333281-13 x -128185-31 x -53755-65 x -25637-155 x -10751-403 x -4135-827 x -2015
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 1,666,405, 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 | 1,666,405 | |
| -1 | -1,666,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,666,405.
Example:
1 x 1,666,405 = 1,666,405
and
-1 x -1,666,405 = 1,666,405
Notice both answers equal 1,666,405
With that explanation out of the way, let's continue. Next, we take the number 1,666,405 and divide it by 2:
1,666,405 ÷ 2 = 833,202.5
If the quotient is a whole number, then 2 and 833,202.5 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 | 1,666,405 | |
| -1 | -1,666,405 |
Now, we try dividing 1,666,405 by 3:
1,666,405 ÷ 3 = 555,468.3333
If the quotient is a whole number, then 3 and 555,468.3333 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 | 1,666,405 | |
| -1 | -1,666,405 |
Let's try dividing by 4:
1,666,405 ÷ 4 = 416,601.25
If the quotient is a whole number, then 4 and 416,601.25 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 | 1,666,405 | |
| -1 | 1,666,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 31 | 65 | 155 | 403 | 827 | 2,015 | 4,135 | 10,751 | 25,637 | 53,755 | 128,185 | 333,281 | 1,666,405 |
| -1 | -5 | -13 | -31 | -65 | -155 | -403 | -827 | -2,015 | -4,135 | -10,751 | -25,637 | -53,755 | -128,185 | -333,281 | -1,666,405 |
Here are some more numbers to try:
Try the factor calculator