A:
Positive:
1 x 214350555 x 428701147 x 45606553 x 404435235 x 91213265 x 808871721 x 124552491 x 8605
Negative:
-1 x -21435055-5 x -4287011-47 x -456065-53 x -404435-235 x -91213-265 x -80887-1721 x -12455-2491 x -8605
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 21,435,055, 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 | 21,435,055 | |
| -1 | -21,435,055 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,435,055.
Example:
1 x 21,435,055 = 21,435,055
and
-1 x -21,435,055 = 21,435,055
Notice both answers equal 21,435,055
With that explanation out of the way, let's continue. Next, we take the number 21,435,055 and divide it by 2:
21,435,055 ÷ 2 = 10,717,527.5
If the quotient is a whole number, then 2 and 10,717,527.5 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 | 21,435,055 | |
| -1 | -21,435,055 |
Now, we try dividing 21,435,055 by 3:
21,435,055 ÷ 3 = 7,145,018.3333
If the quotient is a whole number, then 3 and 7,145,018.3333 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 | 21,435,055 | |
| -1 | -21,435,055 |
Let's try dividing by 4:
21,435,055 ÷ 4 = 5,358,763.75
If the quotient is a whole number, then 4 and 5,358,763.75 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 | 21,435,055 | |
| -1 | 21,435,055 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 53 | 235 | 265 | 1,721 | 2,491 | 8,605 | 12,455 | 80,887 | 91,213 | 404,435 | 456,065 | 4,287,011 | 21,435,055 |
| -1 | -5 | -47 | -53 | -235 | -265 | -1,721 | -2,491 | -8,605 | -12,455 | -80,887 | -91,213 | -404,435 | -456,065 | -4,287,011 | -21,435,055 |
Here are some more numbers to try:
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