A:
Positive:
1 x 263855155 x 527710313 x 202965565 x 405931137 x 192595685 x 385191781 x 148152963 x 8905
Negative:
-1 x -26385515-5 x -5277103-13 x -2029655-65 x -405931-137 x -192595-685 x -38519-1781 x -14815-2963 x -8905
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 26,385,515, 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 | 26,385,515 | |
| -1 | -26,385,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,385,515.
Example:
1 x 26,385,515 = 26,385,515
and
-1 x -26,385,515 = 26,385,515
Notice both answers equal 26,385,515
With that explanation out of the way, let's continue. Next, we take the number 26,385,515 and divide it by 2:
26,385,515 ÷ 2 = 13,192,757.5
If the quotient is a whole number, then 2 and 13,192,757.5 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 | 26,385,515 | |
| -1 | -26,385,515 |
Now, we try dividing 26,385,515 by 3:
26,385,515 ÷ 3 = 8,795,171.6667
If the quotient is a whole number, then 3 and 8,795,171.6667 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 | 26,385,515 | |
| -1 | -26,385,515 |
Let's try dividing by 4:
26,385,515 ÷ 4 = 6,596,378.75
If the quotient is a whole number, then 4 and 6,596,378.75 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 | 26,385,515 | |
| -1 | 26,385,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 137 | 685 | 1,781 | 2,963 | 8,905 | 14,815 | 38,519 | 192,595 | 405,931 | 2,029,655 | 5,277,103 | 26,385,515 |
| -1 | -5 | -13 | -65 | -137 | -685 | -1,781 | -2,963 | -8,905 | -14,815 | -38,519 | -192,595 | -405,931 | -2,029,655 | -5,277,103 | -26,385,515 |
Here are some more numbers to try:
Try the factor calculator