A:
Positive:
1 x 206654355 x 41330877 x 295220535 x 59044141 x 504035205 x 100807287 x 720051435 x 14401
Negative:
-1 x -20665435-5 x -4133087-7 x -2952205-35 x -590441-41 x -504035-205 x -100807-287 x -72005-1435 x -14401
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 20,665,435, 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 | 20,665,435 | |
| -1 | -20,665,435 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,665,435.
Example:
1 x 20,665,435 = 20,665,435
and
-1 x -20,665,435 = 20,665,435
Notice both answers equal 20,665,435
With that explanation out of the way, let's continue. Next, we take the number 20,665,435 and divide it by 2:
20,665,435 ÷ 2 = 10,332,717.5
If the quotient is a whole number, then 2 and 10,332,717.5 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 | 20,665,435 | |
| -1 | -20,665,435 |
Now, we try dividing 20,665,435 by 3:
20,665,435 ÷ 3 = 6,888,478.3333
If the quotient is a whole number, then 3 and 6,888,478.3333 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 | 20,665,435 | |
| -1 | -20,665,435 |
Let's try dividing by 4:
20,665,435 ÷ 4 = 5,166,358.75
If the quotient is a whole number, then 4 and 5,166,358.75 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 | 20,665,435 | |
| -1 | 20,665,435 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 41 | 205 | 287 | 1,435 | 14,401 | 72,005 | 100,807 | 504,035 | 590,441 | 2,952,205 | 4,133,087 | 20,665,435 |
| -1 | -5 | -7 | -35 | -41 | -205 | -287 | -1,435 | -14,401 | -72,005 | -100,807 | -504,035 | -590,441 | -2,952,205 | -4,133,087 | -20,665,435 |
Here are some more numbers to try:
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