A:
Positive:
1 x 206634355 x 413268713 x 158949543 x 48054565 x 317899215 x 96109559 x 369652795 x 7393
Negative:
-1 x -20663435-5 x -4132687-13 x -1589495-43 x -480545-65 x -317899-215 x -96109-559 x -36965-2795 x -7393
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 20,663,435, 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 | 20,663,435 | |
| -1 | -20,663,435 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,663,435.
Example:
1 x 20,663,435 = 20,663,435
and
-1 x -20,663,435 = 20,663,435
Notice both answers equal 20,663,435
With that explanation out of the way, let's continue. Next, we take the number 20,663,435 and divide it by 2:
20,663,435 ÷ 2 = 10,331,717.5
If the quotient is a whole number, then 2 and 10,331,717.5 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 | 20,663,435 | |
| -1 | -20,663,435 |
Now, we try dividing 20,663,435 by 3:
20,663,435 ÷ 3 = 6,887,811.6667
If the quotient is a whole number, then 3 and 6,887,811.6667 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 | 20,663,435 | |
| -1 | -20,663,435 |
Let's try dividing by 4:
20,663,435 ÷ 4 = 5,165,858.75
If the quotient is a whole number, then 4 and 5,165,858.75 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 | 20,663,435 | |
| -1 | 20,663,435 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 43 | 65 | 215 | 559 | 2,795 | 7,393 | 36,965 | 96,109 | 317,899 | 480,545 | 1,589,495 | 4,132,687 | 20,663,435 |
| -1 | -5 | -13 | -43 | -65 | -215 | -559 | -2,795 | -7,393 | -36,965 | -96,109 | -317,899 | -480,545 | -1,589,495 | -4,132,687 | -20,663,435 |
Here are some more numbers to try:
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