A:
Positive:
1 x 2050003555 x 410000717 x 2928576535 x 5857153797 x 2572153985 x 514435579 x 367457349 x 27895
Negative:
-1 x -205000355-5 x -41000071-7 x -29285765-35 x -5857153-797 x -257215-3985 x -51443-5579 x -36745-7349 x -27895
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 205,000,355, 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 | 205,000,355 | |
| -1 | -205,000,355 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 205,000,355.
Example:
1 x 205,000,355 = 205,000,355
and
-1 x -205,000,355 = 205,000,355
Notice both answers equal 205,000,355
With that explanation out of the way, let's continue. Next, we take the number 205,000,355 and divide it by 2:
205,000,355 ÷ 2 = 102,500,177.5
If the quotient is a whole number, then 2 and 102,500,177.5 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 | 205,000,355 | |
| -1 | -205,000,355 |
Now, we try dividing 205,000,355 by 3:
205,000,355 ÷ 3 = 68,333,451.6667
If the quotient is a whole number, then 3 and 68,333,451.6667 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 | 205,000,355 | |
| -1 | -205,000,355 |
Let's try dividing by 4:
205,000,355 ÷ 4 = 51,250,088.75
If the quotient is a whole number, then 4 and 51,250,088.75 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 | 205,000,355 | |
| -1 | 205,000,355 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 797 | 3,985 | 5,579 | 7,349 | 27,895 | 36,745 | 51,443 | 257,215 | 5,857,153 | 29,285,765 | 41,000,071 | 205,000,355 |
| -1 | -5 | -7 | -35 | -797 | -3,985 | -5,579 | -7,349 | -27,895 | -36,745 | -51,443 | -257,215 | -5,857,153 | -29,285,765 | -41,000,071 | -205,000,355 |
Here are some more numbers to try:
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