A:
Positive:
1 x 2613031337 x 3732901913 x 2010024149 x 533271791 x 2871463311 x 840203637 x 4102091319 x 1981072177 x 1200294043 x 646319233 x 2830115239 x 17147
Negative:
-1 x -261303133-7 x -37329019-13 x -20100241-49 x -5332717-91 x -2871463-311 x -840203-637 x -410209-1319 x -198107-2177 x -120029-4043 x -64631-9233 x -28301-15239 x -17147
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 261,303,133, 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 | 261,303,133 | |
| -1 | -261,303,133 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 261,303,133.
Example:
1 x 261,303,133 = 261,303,133
and
-1 x -261,303,133 = 261,303,133
Notice both answers equal 261,303,133
With that explanation out of the way, let's continue. Next, we take the number 261,303,133 and divide it by 2:
261,303,133 ÷ 2 = 130,651,566.5
If the quotient is a whole number, then 2 and 130,651,566.5 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 | 261,303,133 | |
| -1 | -261,303,133 |
Now, we try dividing 261,303,133 by 3:
261,303,133 ÷ 3 = 87,101,044.3333
If the quotient is a whole number, then 3 and 87,101,044.3333 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 | 261,303,133 | |
| -1 | -261,303,133 |
Let's try dividing by 4:
261,303,133 ÷ 4 = 65,325,783.25
If the quotient is a whole number, then 4 and 65,325,783.25 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 | 261,303,133 | |
| -1 | 261,303,133 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 49 | 91 | 311 | 637 | 1,319 | 2,177 | 4,043 | 9,233 | 15,239 | 17,147 | 28,301 | 64,631 | 120,029 | 198,107 | 410,209 | 840,203 | 2,871,463 | 5,332,717 | 20,100,241 | 37,329,019 | 261,303,133 |
| -1 | -7 | -13 | -49 | -91 | -311 | -637 | -1,319 | -2,177 | -4,043 | -9,233 | -15,239 | -17,147 | -28,301 | -64,631 | -120,029 | -198,107 | -410,209 | -840,203 | -2,871,463 | -5,332,717 | -20,100,241 | -37,329,019 | -261,303,133 |
Here are some more numbers to try:
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