A:
Positive:
1 x 1203224055 x 240644817 x 1718891535 x 3437783479 x 2511952395 x 502393353 x 358857177 x 16765
Negative:
-1 x -120322405-5 x -24064481-7 x -17188915-35 x -3437783-479 x -251195-2395 x -50239-3353 x -35885-7177 x -16765
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 120,322,405, 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 | 120,322,405 | |
| -1 | -120,322,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,322,405.
Example:
1 x 120,322,405 = 120,322,405
and
-1 x -120,322,405 = 120,322,405
Notice both answers equal 120,322,405
With that explanation out of the way, let's continue. Next, we take the number 120,322,405 and divide it by 2:
120,322,405 ÷ 2 = 60,161,202.5
If the quotient is a whole number, then 2 and 60,161,202.5 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 | 120,322,405 | |
| -1 | -120,322,405 |
Now, we try dividing 120,322,405 by 3:
120,322,405 ÷ 3 = 40,107,468.3333
If the quotient is a whole number, then 3 and 40,107,468.3333 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 | 120,322,405 | |
| -1 | -120,322,405 |
Let's try dividing by 4:
120,322,405 ÷ 4 = 30,080,601.25
If the quotient is a whole number, then 4 and 30,080,601.25 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 | 120,322,405 | |
| -1 | 120,322,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 479 | 2,395 | 3,353 | 7,177 | 16,765 | 35,885 | 50,239 | 251,195 | 3,437,783 | 17,188,915 | 24,064,481 | 120,322,405 |
| -1 | -5 | -7 | -35 | -479 | -2,395 | -3,353 | -7,177 | -16,765 | -35,885 | -50,239 | -251,195 | -3,437,783 | -17,188,915 | -24,064,481 | -120,322,405 |
Here are some more numbers to try:
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