A:
Positive:
1 x 2621979113 x 201690719 x 137998937 x 708643151 x 173641247 x 106153361 x 72631481 x 54511703 x 372971963 x 133572869 x 91394693 x 5587
Negative:
-1 x -26219791-13 x -2016907-19 x -1379989-37 x -708643-151 x -173641-247 x -106153-361 x -72631-481 x -54511-703 x -37297-1963 x -13357-2869 x -9139-4693 x -5587
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 26,219,791, 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 | 26,219,791 | |
| -1 | -26,219,791 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,219,791.
Example:
1 x 26,219,791 = 26,219,791
and
-1 x -26,219,791 = 26,219,791
Notice both answers equal 26,219,791
With that explanation out of the way, let's continue. Next, we take the number 26,219,791 and divide it by 2:
26,219,791 ÷ 2 = 13,109,895.5
If the quotient is a whole number, then 2 and 13,109,895.5 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 | 26,219,791 | |
| -1 | -26,219,791 |
Now, we try dividing 26,219,791 by 3:
26,219,791 ÷ 3 = 8,739,930.3333
If the quotient is a whole number, then 3 and 8,739,930.3333 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 | 26,219,791 | |
| -1 | -26,219,791 |
Let's try dividing by 4:
26,219,791 ÷ 4 = 6,554,947.75
If the quotient is a whole number, then 4 and 6,554,947.75 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 | 26,219,791 | |
| -1 | 26,219,791 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 37 | 151 | 247 | 361 | 481 | 703 | 1,963 | 2,869 | 4,693 | 5,587 | 9,139 | 13,357 | 37,297 | 54,511 | 72,631 | 106,153 | 173,641 | 708,643 | 1,379,989 | 2,016,907 | 26,219,791 |
| -1 | -13 | -19 | -37 | -151 | -247 | -361 | -481 | -703 | -1,963 | -2,869 | -4,693 | -5,587 | -9,139 | -13,357 | -37,297 | -54,511 | -72,631 | -106,153 | -173,641 | -708,643 | -1,379,989 | -2,016,907 | -26,219,791 |
Here are some more numbers to try:
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