A:
Positive:
1 x 1201742455 x 2403484971 x 1692595355 x 338519503 x 238915673 x 1785652515 x 477833365 x 35713
Negative:
-1 x -120174245-5 x -24034849-71 x -1692595-355 x -338519-503 x -238915-673 x -178565-2515 x -47783-3365 x -35713
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 120,174,245, 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 | 120,174,245 | |
| -1 | -120,174,245 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,174,245.
Example:
1 x 120,174,245 = 120,174,245
and
-1 x -120,174,245 = 120,174,245
Notice both answers equal 120,174,245
With that explanation out of the way, let's continue. Next, we take the number 120,174,245 and divide it by 2:
120,174,245 ÷ 2 = 60,087,122.5
If the quotient is a whole number, then 2 and 60,087,122.5 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 | 120,174,245 | |
| -1 | -120,174,245 |
Now, we try dividing 120,174,245 by 3:
120,174,245 ÷ 3 = 40,058,081.6667
If the quotient is a whole number, then 3 and 40,058,081.6667 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 | 120,174,245 | |
| -1 | -120,174,245 |
Let's try dividing by 4:
120,174,245 ÷ 4 = 30,043,561.25
If the quotient is a whole number, then 4 and 30,043,561.25 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 | 120,174,245 | |
| -1 | 120,174,245 |
If you did it right, you will end up with this table:
| 1 | 5 | 71 | 355 | 503 | 673 | 2,515 | 3,365 | 35,713 | 47,783 | 178,565 | 238,915 | 338,519 | 1,692,595 | 24,034,849 | 120,174,245 |
| -1 | -5 | -71 | -355 | -503 | -673 | -2,515 | -3,365 | -35,713 | -47,783 | -178,565 | -238,915 | -338,519 | -1,692,595 | -24,034,849 | -120,174,245 |
Here are some more numbers to try:
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