A:
Positive:
1 x 2031221355 x 4062442773 x 2782495365 x 556499383 x 5303451453 x 1397951915 x 1060697265 x 27959
Negative:
-1 x -203122135-5 x -40624427-73 x -2782495-365 x -556499-383 x -530345-1453 x -139795-1915 x -106069-7265 x -27959
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 203,122,135, 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 | 203,122,135 | |
| -1 | -203,122,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 203,122,135.
Example:
1 x 203,122,135 = 203,122,135
and
-1 x -203,122,135 = 203,122,135
Notice both answers equal 203,122,135
With that explanation out of the way, let's continue. Next, we take the number 203,122,135 and divide it by 2:
203,122,135 ÷ 2 = 101,561,067.5
If the quotient is a whole number, then 2 and 101,561,067.5 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 | 203,122,135 | |
| -1 | -203,122,135 |
Now, we try dividing 203,122,135 by 3:
203,122,135 ÷ 3 = 67,707,378.3333
If the quotient is a whole number, then 3 and 67,707,378.3333 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 | 203,122,135 | |
| -1 | -203,122,135 |
Let's try dividing by 4:
203,122,135 ÷ 4 = 50,780,533.75
If the quotient is a whole number, then 4 and 50,780,533.75 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 | 203,122,135 | |
| -1 | 203,122,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 73 | 365 | 383 | 1,453 | 1,915 | 7,265 | 27,959 | 106,069 | 139,795 | 530,345 | 556,499 | 2,782,495 | 40,624,427 | 203,122,135 |
| -1 | -5 | -73 | -365 | -383 | -1,453 | -1,915 | -7,265 | -27,959 | -106,069 | -139,795 | -530,345 | -556,499 | -2,782,495 | -40,624,427 | -203,122,135 |
Here are some more numbers to try:
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