A:
Positive:
1 x 12107055 x 24214131 x 3905573 x 16585107 x 11315155 x 7811365 x 3317535 x 2263
Negative:
-1 x -1210705-5 x -242141-31 x -39055-73 x -16585-107 x -11315-155 x -7811-365 x -3317-535 x -2263
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 1,210,705, 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 | 1,210,705 | |
| -1 | -1,210,705 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,210,705.
Example:
1 x 1,210,705 = 1,210,705
and
-1 x -1,210,705 = 1,210,705
Notice both answers equal 1,210,705
With that explanation out of the way, let's continue. Next, we take the number 1,210,705 and divide it by 2:
1,210,705 ÷ 2 = 605,352.5
If the quotient is a whole number, then 2 and 605,352.5 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 | 1,210,705 | |
| -1 | -1,210,705 |
Now, we try dividing 1,210,705 by 3:
1,210,705 ÷ 3 = 403,568.3333
If the quotient is a whole number, then 3 and 403,568.3333 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 | 1,210,705 | |
| -1 | -1,210,705 |
Let's try dividing by 4:
1,210,705 ÷ 4 = 302,676.25
If the quotient is a whole number, then 4 and 302,676.25 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 | 1,210,705 | |
| -1 | 1,210,705 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 73 | 107 | 155 | 365 | 535 | 2,263 | 3,317 | 7,811 | 11,315 | 16,585 | 39,055 | 242,141 | 1,210,705 |
| -1 | -5 | -31 | -73 | -107 | -155 | -365 | -535 | -2,263 | -3,317 | -7,811 | -11,315 | -16,585 | -39,055 | -242,141 | -1,210,705 |
Here are some more numbers to try:
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