A:
Positive:
1 x 268058217 x 382940317 x 157681389 x 301189119 x 225259623 x 430271513 x 177172531 x 10591
Negative:
-1 x -26805821-7 x -3829403-17 x -1576813-89 x -301189-119 x -225259-623 x -43027-1513 x -17717-2531 x -10591
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 26,805,821, 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 | 26,805,821 | |
| -1 | -26,805,821 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,805,821.
Example:
1 x 26,805,821 = 26,805,821
and
-1 x -26,805,821 = 26,805,821
Notice both answers equal 26,805,821
With that explanation out of the way, let's continue. Next, we take the number 26,805,821 and divide it by 2:
26,805,821 ÷ 2 = 13,402,910.5
If the quotient is a whole number, then 2 and 13,402,910.5 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 | 26,805,821 | |
| -1 | -26,805,821 |
Now, we try dividing 26,805,821 by 3:
26,805,821 ÷ 3 = 8,935,273.6667
If the quotient is a whole number, then 3 and 8,935,273.6667 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 | 26,805,821 | |
| -1 | -26,805,821 |
Let's try dividing by 4:
26,805,821 ÷ 4 = 6,701,455.25
If the quotient is a whole number, then 4 and 6,701,455.25 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 | 26,805,821 | |
| -1 | 26,805,821 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 89 | 119 | 623 | 1,513 | 2,531 | 10,591 | 17,717 | 43,027 | 225,259 | 301,189 | 1,576,813 | 3,829,403 | 26,805,821 |
| -1 | -7 | -17 | -89 | -119 | -623 | -1,513 | -2,531 | -10,591 | -17,717 | -43,027 | -225,259 | -301,189 | -1,576,813 | -3,829,403 | -26,805,821 |
Here are some more numbers to try:
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