A:
Positive:
1 x 2030001055 x 406000217 x 2900001511 x 1845455535 x 580000355 x 369091177 x 2636365385 x 527273
Negative:
-1 x -203000105-5 x -40600021-7 x -29000015-11 x -18454555-35 x -5800003-55 x -3690911-77 x -2636365-385 x -527273
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 203,000,105, 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 | 203,000,105 | |
| -1 | -203,000,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 203,000,105.
Example:
1 x 203,000,105 = 203,000,105
and
-1 x -203,000,105 = 203,000,105
Notice both answers equal 203,000,105
With that explanation out of the way, let's continue. Next, we take the number 203,000,105 and divide it by 2:
203,000,105 ÷ 2 = 101,500,052.5
If the quotient is a whole number, then 2 and 101,500,052.5 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 | 203,000,105 | |
| -1 | -203,000,105 |
Now, we try dividing 203,000,105 by 3:
203,000,105 ÷ 3 = 67,666,701.6667
If the quotient is a whole number, then 3 and 67,666,701.6667 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 | 203,000,105 | |
| -1 | -203,000,105 |
Let's try dividing by 4:
203,000,105 ÷ 4 = 50,750,026.25
If the quotient is a whole number, then 4 and 50,750,026.25 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 | 203,000,105 | |
| -1 | 203,000,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 527,273 | 2,636,365 | 3,690,911 | 5,800,003 | 18,454,555 | 29,000,015 | 40,600,021 | 203,000,105 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -527,273 | -2,636,365 | -3,690,911 | -5,800,003 | -18,454,555 | -29,000,015 | -40,600,021 | -203,000,105 |
Here are some more numbers to try:
Try the factor calculator