A:
Positive:
1 x 202731555 x 40546317 x 289616535 x 579233599 x 33845967 x 209652995 x 67694193 x 4835
Negative:
-1 x -20273155-5 x -4054631-7 x -2896165-35 x -579233-599 x -33845-967 x -20965-2995 x -6769-4193 x -4835
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 20,273,155, 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 | 20,273,155 | |
| -1 | -20,273,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,273,155.
Example:
1 x 20,273,155 = 20,273,155
and
-1 x -20,273,155 = 20,273,155
Notice both answers equal 20,273,155
With that explanation out of the way, let's continue. Next, we take the number 20,273,155 and divide it by 2:
20,273,155 ÷ 2 = 10,136,577.5
If the quotient is a whole number, then 2 and 10,136,577.5 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 | 20,273,155 | |
| -1 | -20,273,155 |
Now, we try dividing 20,273,155 by 3:
20,273,155 ÷ 3 = 6,757,718.3333
If the quotient is a whole number, then 3 and 6,757,718.3333 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 | 20,273,155 | |
| -1 | -20,273,155 |
Let's try dividing by 4:
20,273,155 ÷ 4 = 5,068,288.75
If the quotient is a whole number, then 4 and 5,068,288.75 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 | 20,273,155 | |
| -1 | 20,273,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 599 | 967 | 2,995 | 4,193 | 4,835 | 6,769 | 20,965 | 33,845 | 579,233 | 2,896,165 | 4,054,631 | 20,273,155 |
| -1 | -5 | -7 | -35 | -599 | -967 | -2,995 | -4,193 | -4,835 | -6,769 | -20,965 | -33,845 | -579,233 | -2,896,165 | -4,054,631 | -20,273,155 |
Here are some more numbers to try:
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