A:
Positive:
1 x 1207175755 x 2414351511 x 1097432525 x 482870329 x 416267555 x 2194865145 x 832535275 x 438973319 x 378425725 x 1665071595 x 756857975 x 15137
Negative:
-1 x -120717575-5 x -24143515-11 x -10974325-25 x -4828703-29 x -4162675-55 x -2194865-145 x -832535-275 x -438973-319 x -378425-725 x -166507-1595 x -75685-7975 x -15137
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 120,717,575, 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 | 120,717,575 | |
| -1 | -120,717,575 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,717,575.
Example:
1 x 120,717,575 = 120,717,575
and
-1 x -120,717,575 = 120,717,575
Notice both answers equal 120,717,575
With that explanation out of the way, let's continue. Next, we take the number 120,717,575 and divide it by 2:
120,717,575 ÷ 2 = 60,358,787.5
If the quotient is a whole number, then 2 and 60,358,787.5 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 | 120,717,575 | |
| -1 | -120,717,575 |
Now, we try dividing 120,717,575 by 3:
120,717,575 ÷ 3 = 40,239,191.6667
If the quotient is a whole number, then 3 and 40,239,191.6667 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 | 120,717,575 | |
| -1 | -120,717,575 |
Let's try dividing by 4:
120,717,575 ÷ 4 = 30,179,393.75
If the quotient is a whole number, then 4 and 30,179,393.75 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 | 120,717,575 | |
| -1 | 120,717,575 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 29 | 55 | 145 | 275 | 319 | 725 | 1,595 | 7,975 | 15,137 | 75,685 | 166,507 | 378,425 | 438,973 | 832,535 | 2,194,865 | 4,162,675 | 4,828,703 | 10,974,325 | 24,143,515 | 120,717,575 |
| -1 | -5 | -11 | -25 | -29 | -55 | -145 | -275 | -319 | -725 | -1,595 | -7,975 | -15,137 | -75,685 | -166,507 | -378,425 | -438,973 | -832,535 | -2,194,865 | -4,162,675 | -4,828,703 | -10,974,325 | -24,143,515 | -120,717,575 |
Here are some more numbers to try:
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