A:
Positive:
1 x 2039279455 x 4078558913 x 1568676565 x 3137353239 x 8532551195 x 1706513107 x 6563513127 x 15535
Negative:
-1 x -203927945-5 x -40785589-13 x -15686765-65 x -3137353-239 x -853255-1195 x -170651-3107 x -65635-13127 x -15535
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 203,927,945, 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 | 203,927,945 | |
| -1 | -203,927,945 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 203,927,945.
Example:
1 x 203,927,945 = 203,927,945
and
-1 x -203,927,945 = 203,927,945
Notice both answers equal 203,927,945
With that explanation out of the way, let's continue. Next, we take the number 203,927,945 and divide it by 2:
203,927,945 ÷ 2 = 101,963,972.5
If the quotient is a whole number, then 2 and 101,963,972.5 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 | 203,927,945 | |
| -1 | -203,927,945 |
Now, we try dividing 203,927,945 by 3:
203,927,945 ÷ 3 = 67,975,981.6667
If the quotient is a whole number, then 3 and 67,975,981.6667 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 | 203,927,945 | |
| -1 | -203,927,945 |
Let's try dividing by 4:
203,927,945 ÷ 4 = 50,981,986.25
If the quotient is a whole number, then 4 and 50,981,986.25 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 | 203,927,945 | |
| -1 | 203,927,945 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 239 | 1,195 | 3,107 | 13,127 | 15,535 | 65,635 | 170,651 | 853,255 | 3,137,353 | 15,686,765 | 40,785,589 | 203,927,945 |
| -1 | -5 | -13 | -65 | -239 | -1,195 | -3,107 | -13,127 | -15,535 | -65,635 | -170,651 | -853,255 | -3,137,353 | -15,686,765 | -40,785,589 | -203,927,945 |
Here are some more numbers to try:
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