A:
Positive:
1 x 111502155 x 223004317 x 65589585 x 131179233 x 47855563 x 198051165 x 95712815 x 3961
Negative:
-1 x -11150215-5 x -2230043-17 x -655895-85 x -131179-233 x -47855-563 x -19805-1165 x -9571-2815 x -3961
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 11,150,215, 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 | 11,150,215 | |
| -1 | -11,150,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 11,150,215.
Example:
1 x 11,150,215 = 11,150,215
and
-1 x -11,150,215 = 11,150,215
Notice both answers equal 11,150,215
With that explanation out of the way, let's continue. Next, we take the number 11,150,215 and divide it by 2:
11,150,215 ÷ 2 = 5,575,107.5
If the quotient is a whole number, then 2 and 5,575,107.5 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 | 11,150,215 | |
| -1 | -11,150,215 |
Now, we try dividing 11,150,215 by 3:
11,150,215 ÷ 3 = 3,716,738.3333
If the quotient is a whole number, then 3 and 3,716,738.3333 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 | 11,150,215 | |
| -1 | -11,150,215 |
Let's try dividing by 4:
11,150,215 ÷ 4 = 2,787,553.75
If the quotient is a whole number, then 4 and 2,787,553.75 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 | 11,150,215 | |
| -1 | 11,150,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 233 | 563 | 1,165 | 2,815 | 3,961 | 9,571 | 19,805 | 47,855 | 131,179 | 655,895 | 2,230,043 | 11,150,215 |
| -1 | -5 | -17 | -85 | -233 | -563 | -1,165 | -2,815 | -3,961 | -9,571 | -19,805 | -47,855 | -131,179 | -655,895 | -2,230,043 | -11,150,215 |
Here are some more numbers to try:
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