A:
Positive:
1 x 21605355 x 43210713 x 16619543 x 5024565 x 33239215 x 10049559 x 3865773 x 2795
Negative:
-1 x -2160535-5 x -432107-13 x -166195-43 x -50245-65 x -33239-215 x -10049-559 x -3865-773 x -2795
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 2,160,535, 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 | 2,160,535 | |
| -1 | -2,160,535 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,160,535.
Example:
1 x 2,160,535 = 2,160,535
and
-1 x -2,160,535 = 2,160,535
Notice both answers equal 2,160,535
With that explanation out of the way, let's continue. Next, we take the number 2,160,535 and divide it by 2:
2,160,535 ÷ 2 = 1,080,267.5
If the quotient is a whole number, then 2 and 1,080,267.5 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 | 2,160,535 | |
| -1 | -2,160,535 |
Now, we try dividing 2,160,535 by 3:
2,160,535 ÷ 3 = 720,178.3333
If the quotient is a whole number, then 3 and 720,178.3333 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 | 2,160,535 | |
| -1 | -2,160,535 |
Let's try dividing by 4:
2,160,535 ÷ 4 = 540,133.75
If the quotient is a whole number, then 4 and 540,133.75 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 | 2,160,535 | |
| -1 | 2,160,535 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 43 | 65 | 215 | 559 | 773 | 2,795 | 3,865 | 10,049 | 33,239 | 50,245 | 166,195 | 432,107 | 2,160,535 |
| -1 | -5 | -13 | -43 | -65 | -215 | -559 | -773 | -2,795 | -3,865 | -10,049 | -33,239 | -50,245 | -166,195 | -432,107 | -2,160,535 |
Here are some more numbers to try:
Try the factor calculator