A:
Positive:
1 x 1314041311 x 119458313 x 101080143 x 305591143 x 91891473 x 27781559 x 235072137 x 6149
Negative:
-1 x -13140413-11 x -1194583-13 x -1010801-43 x -305591-143 x -91891-473 x -27781-559 x -23507-2137 x -6149
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 13,140,413, 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 | 13,140,413 | |
| -1 | -13,140,413 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,140,413.
Example:
1 x 13,140,413 = 13,140,413
and
-1 x -13,140,413 = 13,140,413
Notice both answers equal 13,140,413
With that explanation out of the way, let's continue. Next, we take the number 13,140,413 and divide it by 2:
13,140,413 ÷ 2 = 6,570,206.5
If the quotient is a whole number, then 2 and 6,570,206.5 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 | 13,140,413 | |
| -1 | -13,140,413 |
Now, we try dividing 13,140,413 by 3:
13,140,413 ÷ 3 = 4,380,137.6667
If the quotient is a whole number, then 3 and 4,380,137.6667 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 | 13,140,413 | |
| -1 | -13,140,413 |
Let's try dividing by 4:
13,140,413 ÷ 4 = 3,285,103.25
If the quotient is a whole number, then 4 and 3,285,103.25 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 | 13,140,413 | |
| -1 | 13,140,413 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 43 | 143 | 473 | 559 | 2,137 | 6,149 | 23,507 | 27,781 | 91,891 | 305,591 | 1,010,801 | 1,194,583 | 13,140,413 |
| -1 | -11 | -13 | -43 | -143 | -473 | -559 | -2,137 | -6,149 | -23,507 | -27,781 | -91,891 | -305,591 | -1,010,801 | -1,194,583 | -13,140,413 |
Here are some more numbers to try:
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