A:
Positive:
1 x 12334012911 x 1121273937 x 3333517179 x 689051407 x 3030471693 x 728531969 x 626416623 x 18623
Negative:
-1 x -123340129-11 x -11212739-37 x -3333517-179 x -689051-407 x -303047-1693 x -72853-1969 x -62641-6623 x -18623
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 123,340,129, 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 | 123,340,129 | |
| -1 | -123,340,129 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 123,340,129.
Example:
1 x 123,340,129 = 123,340,129
and
-1 x -123,340,129 = 123,340,129
Notice both answers equal 123,340,129
With that explanation out of the way, let's continue. Next, we take the number 123,340,129 and divide it by 2:
123,340,129 ÷ 2 = 61,670,064.5
If the quotient is a whole number, then 2 and 61,670,064.5 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 | 123,340,129 | |
| -1 | -123,340,129 |
Now, we try dividing 123,340,129 by 3:
123,340,129 ÷ 3 = 41,113,376.3333
If the quotient is a whole number, then 3 and 41,113,376.3333 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 | 123,340,129 | |
| -1 | -123,340,129 |
Let's try dividing by 4:
123,340,129 ÷ 4 = 30,835,032.25
If the quotient is a whole number, then 4 and 30,835,032.25 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 | 123,340,129 | |
| -1 | 123,340,129 |
If you did it right, you will end up with this table:
| 1 | 11 | 37 | 179 | 407 | 1,693 | 1,969 | 6,623 | 18,623 | 62,641 | 72,853 | 303,047 | 689,051 | 3,333,517 | 11,212,739 | 123,340,129 |
| -1 | -11 | -37 | -179 | -407 | -1,693 | -1,969 | -6,623 | -18,623 | -62,641 | -72,853 | -303,047 | -689,051 | -3,333,517 | -11,212,739 | -123,340,129 |
Here are some more numbers to try:
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