A:
Positive:
1 x 115214055 x 23042817 x 164591535 x 32918353 x 217385265 x 43477371 x 310551855 x 6211
Negative:
-1 x -11521405-5 x -2304281-7 x -1645915-35 x -329183-53 x -217385-265 x -43477-371 x -31055-1855 x -6211
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 11,521,405, 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 | 11,521,405 | |
| -1 | -11,521,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 11,521,405.
Example:
1 x 11,521,405 = 11,521,405
and
-1 x -11,521,405 = 11,521,405
Notice both answers equal 11,521,405
With that explanation out of the way, let's continue. Next, we take the number 11,521,405 and divide it by 2:
11,521,405 ÷ 2 = 5,760,702.5
If the quotient is a whole number, then 2 and 5,760,702.5 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 | 11,521,405 | |
| -1 | -11,521,405 |
Now, we try dividing 11,521,405 by 3:
11,521,405 ÷ 3 = 3,840,468.3333
If the quotient is a whole number, then 3 and 3,840,468.3333 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 | 11,521,405 | |
| -1 | -11,521,405 |
Let's try dividing by 4:
11,521,405 ÷ 4 = 2,880,351.25
If the quotient is a whole number, then 4 and 2,880,351.25 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 | 11,521,405 | |
| -1 | 11,521,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 53 | 265 | 371 | 1,855 | 6,211 | 31,055 | 43,477 | 217,385 | 329,183 | 1,645,915 | 2,304,281 | 11,521,405 |
| -1 | -5 | -7 | -35 | -53 | -265 | -371 | -1,855 | -6,211 | -31,055 | -43,477 | -217,385 | -329,183 | -1,645,915 | -2,304,281 | -11,521,405 |
Here are some more numbers to try:
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