A:
Positive:
1 x 12321020317 x 724765973 x 1687811101 x 1219903983 x 1253411241 x 992831717 x 717597373 x 16711
Negative:
-1 x -123210203-17 x -7247659-73 x -1687811-101 x -1219903-983 x -125341-1241 x -99283-1717 x -71759-7373 x -16711
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 123,210,203, 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 | 123,210,203 | |
| -1 | -123,210,203 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 123,210,203.
Example:
1 x 123,210,203 = 123,210,203
and
-1 x -123,210,203 = 123,210,203
Notice both answers equal 123,210,203
With that explanation out of the way, let's continue. Next, we take the number 123,210,203 and divide it by 2:
123,210,203 ÷ 2 = 61,605,101.5
If the quotient is a whole number, then 2 and 61,605,101.5 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 | 123,210,203 | |
| -1 | -123,210,203 |
Now, we try dividing 123,210,203 by 3:
123,210,203 ÷ 3 = 41,070,067.6667
If the quotient is a whole number, then 3 and 41,070,067.6667 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 | 123,210,203 | |
| -1 | -123,210,203 |
Let's try dividing by 4:
123,210,203 ÷ 4 = 30,802,550.75
If the quotient is a whole number, then 4 and 30,802,550.75 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 | 123,210,203 | |
| -1 | 123,210,203 |
If you did it right, you will end up with this table:
| 1 | 17 | 73 | 101 | 983 | 1,241 | 1,717 | 7,373 | 16,711 | 71,759 | 99,283 | 125,341 | 1,219,903 | 1,687,811 | 7,247,659 | 123,210,203 |
| -1 | -17 | -73 | -101 | -983 | -1,241 | -1,717 | -7,373 | -16,711 | -71,759 | -99,283 | -125,341 | -1,219,903 | -1,687,811 | -7,247,659 | -123,210,203 |
Here are some more numbers to try:
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