A:
Positive:
1 x 26133341311 x 2375758329 x 9011497319 x 819227409 x 6389572003 x 1304714499 x 5808711861 x 22033
Negative:
-1 x -261333413-11 x -23757583-29 x -9011497-319 x -819227-409 x -638957-2003 x -130471-4499 x -58087-11861 x -22033
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 261,333,413, 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 | 261,333,413 | |
| -1 | -261,333,413 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 261,333,413.
Example:
1 x 261,333,413 = 261,333,413
and
-1 x -261,333,413 = 261,333,413
Notice both answers equal 261,333,413
With that explanation out of the way, let's continue. Next, we take the number 261,333,413 and divide it by 2:
261,333,413 ÷ 2 = 130,666,706.5
If the quotient is a whole number, then 2 and 130,666,706.5 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 | 261,333,413 | |
| -1 | -261,333,413 |
Now, we try dividing 261,333,413 by 3:
261,333,413 ÷ 3 = 87,111,137.6667
If the quotient is a whole number, then 3 and 87,111,137.6667 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 | 261,333,413 | |
| -1 | -261,333,413 |
Let's try dividing by 4:
261,333,413 ÷ 4 = 65,333,353.25
If the quotient is a whole number, then 4 and 65,333,353.25 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 | 261,333,413 | |
| -1 | 261,333,413 |
If you did it right, you will end up with this table:
| 1 | 11 | 29 | 319 | 409 | 2,003 | 4,499 | 11,861 | 22,033 | 58,087 | 130,471 | 638,957 | 819,227 | 9,011,497 | 23,757,583 | 261,333,413 |
| -1 | -11 | -29 | -319 | -409 | -2,003 | -4,499 | -11,861 | -22,033 | -58,087 | -130,471 | -638,957 | -819,227 | -9,011,497 | -23,757,583 | -261,333,413 |
Here are some more numbers to try:
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