A:
Positive:
1 x 12408555 x 2481717 x 17726511 x 11280535 x 3545355 x 2256177 x 16115121 x 10255293 x 4235385 x 3223605 x 2051847 x 1465
Negative:
-1 x -1240855-5 x -248171-7 x -177265-11 x -112805-35 x -35453-55 x -22561-77 x -16115-121 x -10255-293 x -4235-385 x -3223-605 x -2051-847 x -1465
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 1,240,855, 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 | 1,240,855 | |
| -1 | -1,240,855 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,240,855.
Example:
1 x 1,240,855 = 1,240,855
and
-1 x -1,240,855 = 1,240,855
Notice both answers equal 1,240,855
With that explanation out of the way, let's continue. Next, we take the number 1,240,855 and divide it by 2:
1,240,855 ÷ 2 = 620,427.5
If the quotient is a whole number, then 2 and 620,427.5 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 | 1,240,855 | |
| -1 | -1,240,855 |
Now, we try dividing 1,240,855 by 3:
1,240,855 ÷ 3 = 413,618.3333
If the quotient is a whole number, then 3 and 413,618.3333 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 | 1,240,855 | |
| -1 | -1,240,855 |
Let's try dividing by 4:
1,240,855 ÷ 4 = 310,213.75
If the quotient is a whole number, then 4 and 310,213.75 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 | 1,240,855 | |
| -1 | 1,240,855 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 121 | 293 | 385 | 605 | 847 | 1,465 | 2,051 | 3,223 | 4,235 | 10,255 | 16,115 | 22,561 | 35,453 | 112,805 | 177,265 | 248,171 | 1,240,855 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -121 | -293 | -385 | -605 | -847 | -1,465 | -2,051 | -3,223 | -4,235 | -10,255 | -16,115 | -22,561 | -35,453 | -112,805 | -177,265 | -248,171 | -1,240,855 |
Here are some more numbers to try:
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