A:
Positive:
1 x 2566443117 x 3666347311 x 2333130149 x 523763977 x 3333043197 x 1302763539 x 4761491379 x 1861092167 x 1184332417 x 1061839653 x 2658715169 x 16919
Negative:
-1 x -256644311-7 x -36663473-11 x -23331301-49 x -5237639-77 x -3333043-197 x -1302763-539 x -476149-1379 x -186109-2167 x -118433-2417 x -106183-9653 x -26587-15169 x -16919
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 256,644,311, 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 | 256,644,311 | |
| -1 | -256,644,311 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 256,644,311.
Example:
1 x 256,644,311 = 256,644,311
and
-1 x -256,644,311 = 256,644,311
Notice both answers equal 256,644,311
With that explanation out of the way, let's continue. Next, we take the number 256,644,311 and divide it by 2:
256,644,311 ÷ 2 = 128,322,155.5
If the quotient is a whole number, then 2 and 128,322,155.5 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 | 256,644,311 | |
| -1 | -256,644,311 |
Now, we try dividing 256,644,311 by 3:
256,644,311 ÷ 3 = 85,548,103.6667
If the quotient is a whole number, then 3 and 85,548,103.6667 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 | 256,644,311 | |
| -1 | -256,644,311 |
Let's try dividing by 4:
256,644,311 ÷ 4 = 64,161,077.75
If the quotient is a whole number, then 4 and 64,161,077.75 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 | 256,644,311 | |
| -1 | 256,644,311 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 49 | 77 | 197 | 539 | 1,379 | 2,167 | 2,417 | 9,653 | 15,169 | 16,919 | 26,587 | 106,183 | 118,433 | 186,109 | 476,149 | 1,302,763 | 3,333,043 | 5,237,639 | 23,331,301 | 36,663,473 | 256,644,311 |
| -1 | -7 | -11 | -49 | -77 | -197 | -539 | -1,379 | -2,167 | -2,417 | -9,653 | -15,169 | -16,919 | -26,587 | -106,183 | -118,433 | -186,109 | -476,149 | -1,302,763 | -3,333,043 | -5,237,639 | -23,331,301 | -36,663,473 | -256,644,311 |
Here are some more numbers to try:
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