A:
Positive:
1 x 12682155 x 25364313 x 9755565 x 19511109 x 11635179 x 7085545 x 2327895 x 1417
Negative:
-1 x -1268215-5 x -253643-13 x -97555-65 x -19511-109 x -11635-179 x -7085-545 x -2327-895 x -1417
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 1,268,215, 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 | 1,268,215 | |
| -1 | -1,268,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,268,215.
Example:
1 x 1,268,215 = 1,268,215
and
-1 x -1,268,215 = 1,268,215
Notice both answers equal 1,268,215
With that explanation out of the way, let's continue. Next, we take the number 1,268,215 and divide it by 2:
1,268,215 ÷ 2 = 634,107.5
If the quotient is a whole number, then 2 and 634,107.5 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 | 1,268,215 | |
| -1 | -1,268,215 |
Now, we try dividing 1,268,215 by 3:
1,268,215 ÷ 3 = 422,738.3333
If the quotient is a whole number, then 3 and 422,738.3333 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 | 1,268,215 | |
| -1 | -1,268,215 |
Let's try dividing by 4:
1,268,215 ÷ 4 = 317,053.75
If the quotient is a whole number, then 4 and 317,053.75 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 | 1,268,215 | |
| -1 | 1,268,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 109 | 179 | 545 | 895 | 1,417 | 2,327 | 7,085 | 11,635 | 19,511 | 97,555 | 253,643 | 1,268,215 |
| -1 | -5 | -13 | -65 | -109 | -179 | -545 | -895 | -1,417 | -2,327 | -7,085 | -11,635 | -19,511 | -97,555 | -253,643 | -1,268,215 |
Here are some more numbers to try:
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