A:
Positive:
1 x 12412124319 x 653269773 x 1700291109 x 1138727821 x 1511831387 x 894892071 x 599337957 x 15599
Negative:
-1 x -124121243-19 x -6532697-73 x -1700291-109 x -1138727-821 x -151183-1387 x -89489-2071 x -59933-7957 x -15599
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 124,121,243, 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 | 124,121,243 | |
| -1 | -124,121,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 124,121,243.
Example:
1 x 124,121,243 = 124,121,243
and
-1 x -124,121,243 = 124,121,243
Notice both answers equal 124,121,243
With that explanation out of the way, let's continue. Next, we take the number 124,121,243 and divide it by 2:
124,121,243 ÷ 2 = 62,060,621.5
If the quotient is a whole number, then 2 and 62,060,621.5 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 | 124,121,243 | |
| -1 | -124,121,243 |
Now, we try dividing 124,121,243 by 3:
124,121,243 ÷ 3 = 41,373,747.6667
If the quotient is a whole number, then 3 and 41,373,747.6667 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 | 124,121,243 | |
| -1 | -124,121,243 |
Let's try dividing by 4:
124,121,243 ÷ 4 = 31,030,310.75
If the quotient is a whole number, then 4 and 31,030,310.75 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 | 124,121,243 | |
| -1 | 124,121,243 |
If you did it right, you will end up with this table:
| 1 | 19 | 73 | 109 | 821 | 1,387 | 2,071 | 7,957 | 15,599 | 59,933 | 89,489 | 151,183 | 1,138,727 | 1,700,291 | 6,532,697 | 124,121,243 |
| -1 | -19 | -73 | -109 | -821 | -1,387 | -2,071 | -7,957 | -15,599 | -59,933 | -89,489 | -151,183 | -1,138,727 | -1,700,291 | -6,532,697 | -124,121,243 |
Here are some more numbers to try:
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