A:
Positive:
1 x 12008155 x 2401637 x 17154511 x 10916535 x 3430955 x 2183377 x 15595385 x 3119
Negative:
-1 x -1200815-5 x -240163-7 x -171545-11 x -109165-35 x -34309-55 x -21833-77 x -15595-385 x -3119
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 1,200,815, 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 | 1,200,815 | |
| -1 | -1,200,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,200,815.
Example:
1 x 1,200,815 = 1,200,815
and
-1 x -1,200,815 = 1,200,815
Notice both answers equal 1,200,815
With that explanation out of the way, let's continue. Next, we take the number 1,200,815 and divide it by 2:
1,200,815 ÷ 2 = 600,407.5
If the quotient is a whole number, then 2 and 600,407.5 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 | 1,200,815 | |
| -1 | -1,200,815 |
Now, we try dividing 1,200,815 by 3:
1,200,815 ÷ 3 = 400,271.6667
If the quotient is a whole number, then 3 and 400,271.6667 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 | 1,200,815 | |
| -1 | -1,200,815 |
Let's try dividing by 4:
1,200,815 ÷ 4 = 300,203.75
If the quotient is a whole number, then 4 and 300,203.75 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 | 1,200,815 | |
| -1 | 1,200,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 3,119 | 15,595 | 21,833 | 34,309 | 109,165 | 171,545 | 240,163 | 1,200,815 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -3,119 | -15,595 | -21,833 | -34,309 | -109,165 | -171,545 | -240,163 | -1,200,815 |
Here are some more numbers to try:
Try the factor calculator