A:
Positive:
1 x 12017272311 x 1092479323 x 522490129 x 4143887121 x 993163253 x 474991319 x 376717667 x 1801691489 x 807072783 x 431813509 x 342477337 x 16379
Negative:
-1 x -120172723-11 x -10924793-23 x -5224901-29 x -4143887-121 x -993163-253 x -474991-319 x -376717-667 x -180169-1489 x -80707-2783 x -43181-3509 x -34247-7337 x -16379
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 120,172,723, 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 | 120,172,723 | |
| -1 | -120,172,723 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,172,723.
Example:
1 x 120,172,723 = 120,172,723
and
-1 x -120,172,723 = 120,172,723
Notice both answers equal 120,172,723
With that explanation out of the way, let's continue. Next, we take the number 120,172,723 and divide it by 2:
120,172,723 ÷ 2 = 60,086,361.5
If the quotient is a whole number, then 2 and 60,086,361.5 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 | 120,172,723 | |
| -1 | -120,172,723 |
Now, we try dividing 120,172,723 by 3:
120,172,723 ÷ 3 = 40,057,574.3333
If the quotient is a whole number, then 3 and 40,057,574.3333 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 | 120,172,723 | |
| -1 | -120,172,723 |
Let's try dividing by 4:
120,172,723 ÷ 4 = 30,043,180.75
If the quotient is a whole number, then 4 and 30,043,180.75 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 | 120,172,723 | |
| -1 | 120,172,723 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 29 | 121 | 253 | 319 | 667 | 1,489 | 2,783 | 3,509 | 7,337 | 16,379 | 34,247 | 43,181 | 80,707 | 180,169 | 376,717 | 474,991 | 993,163 | 4,143,887 | 5,224,901 | 10,924,793 | 120,172,723 |
| -1 | -11 | -23 | -29 | -121 | -253 | -319 | -667 | -1,489 | -2,783 | -3,509 | -7,337 | -16,379 | -34,247 | -43,181 | -80,707 | -180,169 | -376,717 | -474,991 | -993,163 | -4,143,887 | -5,224,901 | -10,924,793 | -120,172,723 |
Here are some more numbers to try:
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