A:
Positive:
1 x 114055155 x 228110311 x 103686555 x 207373131 x 87065655 x 174131441 x 79151583 x 7205
Negative:
-1 x -11405515-5 x -2281103-11 x -1036865-55 x -207373-131 x -87065-655 x -17413-1441 x -7915-1583 x -7205
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 11,405,515, 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 | 11,405,515 | |
| -1 | -11,405,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 11,405,515.
Example:
1 x 11,405,515 = 11,405,515
and
-1 x -11,405,515 = 11,405,515
Notice both answers equal 11,405,515
With that explanation out of the way, let's continue. Next, we take the number 11,405,515 and divide it by 2:
11,405,515 ÷ 2 = 5,702,757.5
If the quotient is a whole number, then 2 and 5,702,757.5 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 | 11,405,515 | |
| -1 | -11,405,515 |
Now, we try dividing 11,405,515 by 3:
11,405,515 ÷ 3 = 3,801,838.3333
If the quotient is a whole number, then 3 and 3,801,838.3333 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 | 11,405,515 | |
| -1 | -11,405,515 |
Let's try dividing by 4:
11,405,515 ÷ 4 = 2,851,378.75
If the quotient is a whole number, then 4 and 2,851,378.75 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 | 11,405,515 | |
| -1 | 11,405,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 131 | 655 | 1,441 | 1,583 | 7,205 | 7,915 | 17,413 | 87,065 | 207,373 | 1,036,865 | 2,281,103 | 11,405,515 |
| -1 | -5 | -11 | -55 | -131 | -655 | -1,441 | -1,583 | -7,205 | -7,915 | -17,413 | -87,065 | -207,373 | -1,036,865 | -2,281,103 | -11,405,515 |
Here are some more numbers to try:
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