A:
Positive:
1 x 2037049855 x 4074099711 x 1851863519 x 1072131555 x 370372795 x 2144263209 x 9746651045 x 194933
Negative:
-1 x -203704985-5 x -40740997-11 x -18518635-19 x -10721315-55 x -3703727-95 x -2144263-209 x -974665-1045 x -194933
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 203,704,985, 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 | 203,704,985 | |
| -1 | -203,704,985 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 203,704,985.
Example:
1 x 203,704,985 = 203,704,985
and
-1 x -203,704,985 = 203,704,985
Notice both answers equal 203,704,985
With that explanation out of the way, let's continue. Next, we take the number 203,704,985 and divide it by 2:
203,704,985 ÷ 2 = 101,852,492.5
If the quotient is a whole number, then 2 and 101,852,492.5 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 | 203,704,985 | |
| -1 | -203,704,985 |
Now, we try dividing 203,704,985 by 3:
203,704,985 ÷ 3 = 67,901,661.6667
If the quotient is a whole number, then 3 and 67,901,661.6667 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 | 203,704,985 | |
| -1 | -203,704,985 |
Let's try dividing by 4:
203,704,985 ÷ 4 = 50,926,246.25
If the quotient is a whole number, then 4 and 50,926,246.25 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 | 203,704,985 | |
| -1 | 203,704,985 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 55 | 95 | 209 | 1,045 | 194,933 | 974,665 | 2,144,263 | 3,703,727 | 10,721,315 | 18,518,635 | 40,740,997 | 203,704,985 |
| -1 | -5 | -11 | -19 | -55 | -95 | -209 | -1,045 | -194,933 | -974,665 | -2,144,263 | -3,703,727 | -10,721,315 | -18,518,635 | -40,740,997 | -203,704,985 |
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