A:
Positive:
1 x 12478555 x 2495717 x 17826535 x 35653101 x 12355353 x 3535505 x 2471707 x 1765
Negative:
-1 x -1247855-5 x -249571-7 x -178265-35 x -35653-101 x -12355-353 x -3535-505 x -2471-707 x -1765
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 1,247,855, 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 | 1,247,855 | |
| -1 | -1,247,855 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,247,855.
Example:
1 x 1,247,855 = 1,247,855
and
-1 x -1,247,855 = 1,247,855
Notice both answers equal 1,247,855
With that explanation out of the way, let's continue. Next, we take the number 1,247,855 and divide it by 2:
1,247,855 ÷ 2 = 623,927.5
If the quotient is a whole number, then 2 and 623,927.5 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 | 1,247,855 | |
| -1 | -1,247,855 |
Now, we try dividing 1,247,855 by 3:
1,247,855 ÷ 3 = 415,951.6667
If the quotient is a whole number, then 3 and 415,951.6667 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 | 1,247,855 | |
| -1 | -1,247,855 |
Let's try dividing by 4:
1,247,855 ÷ 4 = 311,963.75
If the quotient is a whole number, then 4 and 311,963.75 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 | 1,247,855 | |
| -1 | 1,247,855 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 101 | 353 | 505 | 707 | 1,765 | 2,471 | 3,535 | 12,355 | 35,653 | 178,265 | 249,571 | 1,247,855 |
| -1 | -5 | -7 | -35 | -101 | -353 | -505 | -707 | -1,765 | -2,471 | -3,535 | -12,355 | -35,653 | -178,265 | -249,571 | -1,247,855 |
Here are some more numbers to try:
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