A:
Positive:
1 x 263900455 x 527800911 x 239909555 x 479819257 x 1026851285 x 205371867 x 141352827 x 9335
Negative:
-1 x -26390045-5 x -5278009-11 x -2399095-55 x -479819-257 x -102685-1285 x -20537-1867 x -14135-2827 x -9335
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 26,390,045, 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 | 26,390,045 | |
| -1 | -26,390,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,390,045.
Example:
1 x 26,390,045 = 26,390,045
and
-1 x -26,390,045 = 26,390,045
Notice both answers equal 26,390,045
With that explanation out of the way, let's continue. Next, we take the number 26,390,045 and divide it by 2:
26,390,045 ÷ 2 = 13,195,022.5
If the quotient is a whole number, then 2 and 13,195,022.5 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 | 26,390,045 | |
| -1 | -26,390,045 |
Now, we try dividing 26,390,045 by 3:
26,390,045 ÷ 3 = 8,796,681.6667
If the quotient is a whole number, then 3 and 8,796,681.6667 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 | 26,390,045 | |
| -1 | -26,390,045 |
Let's try dividing by 4:
26,390,045 ÷ 4 = 6,597,511.25
If the quotient is a whole number, then 4 and 6,597,511.25 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 | 26,390,045 | |
| -1 | 26,390,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 257 | 1,285 | 1,867 | 2,827 | 9,335 | 14,135 | 20,537 | 102,685 | 479,819 | 2,399,095 | 5,278,009 | 26,390,045 |
| -1 | -5 | -11 | -55 | -257 | -1,285 | -1,867 | -2,827 | -9,335 | -14,135 | -20,537 | -102,685 | -479,819 | -2,399,095 | -5,278,009 | -26,390,045 |
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