A:
Positive:
1 x 202145355 x 404290711 x 183768555 x 367537157 x 128755785 x 257511727 x 117052341 x 8635
Negative:
-1 x -20214535-5 x -4042907-11 x -1837685-55 x -367537-157 x -128755-785 x -25751-1727 x -11705-2341 x -8635
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 20,214,535, 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 | 20,214,535 | |
| -1 | -20,214,535 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,214,535.
Example:
1 x 20,214,535 = 20,214,535
and
-1 x -20,214,535 = 20,214,535
Notice both answers equal 20,214,535
With that explanation out of the way, let's continue. Next, we take the number 20,214,535 and divide it by 2:
20,214,535 ÷ 2 = 10,107,267.5
If the quotient is a whole number, then 2 and 10,107,267.5 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 | 20,214,535 | |
| -1 | -20,214,535 |
Now, we try dividing 20,214,535 by 3:
20,214,535 ÷ 3 = 6,738,178.3333
If the quotient is a whole number, then 3 and 6,738,178.3333 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 | 20,214,535 | |
| -1 | -20,214,535 |
Let's try dividing by 4:
20,214,535 ÷ 4 = 5,053,633.75
If the quotient is a whole number, then 4 and 5,053,633.75 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 | 20,214,535 | |
| -1 | 20,214,535 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 157 | 785 | 1,727 | 2,341 | 8,635 | 11,705 | 25,751 | 128,755 | 367,537 | 1,837,685 | 4,042,907 | 20,214,535 |
| -1 | -5 | -11 | -55 | -157 | -785 | -1,727 | -2,341 | -8,635 | -11,705 | -25,751 | -128,755 | -367,537 | -1,837,685 | -4,042,907 | -20,214,535 |
Here are some more numbers to try:
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