A:
Positive:
1 x 1200762437 x 1715374961 x 1968463179 x 670817427 x 2812091253 x 958311571 x 7643310919 x 10997
Negative:
-1 x -120076243-7 x -17153749-61 x -1968463-179 x -670817-427 x -281209-1253 x -95831-1571 x -76433-10919 x -10997
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 120,076,243, 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 | 120,076,243 | |
| -1 | -120,076,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 120,076,243.
Example:
1 x 120,076,243 = 120,076,243
and
-1 x -120,076,243 = 120,076,243
Notice both answers equal 120,076,243
With that explanation out of the way, let's continue. Next, we take the number 120,076,243 and divide it by 2:
120,076,243 ÷ 2 = 60,038,121.5
If the quotient is a whole number, then 2 and 60,038,121.5 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 | 120,076,243 | |
| -1 | -120,076,243 |
Now, we try dividing 120,076,243 by 3:
120,076,243 ÷ 3 = 40,025,414.3333
If the quotient is a whole number, then 3 and 40,025,414.3333 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 | 120,076,243 | |
| -1 | -120,076,243 |
Let's try dividing by 4:
120,076,243 ÷ 4 = 30,019,060.75
If the quotient is a whole number, then 4 and 30,019,060.75 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 | 120,076,243 | |
| -1 | 120,076,243 |
If you did it right, you will end up with this table:
| 1 | 7 | 61 | 179 | 427 | 1,253 | 1,571 | 10,919 | 10,997 | 76,433 | 95,831 | 281,209 | 670,817 | 1,968,463 | 17,153,749 | 120,076,243 |
| -1 | -7 | -61 | -179 | -427 | -1,253 | -1,571 | -10,919 | -10,997 | -76,433 | -95,831 | -281,209 | -670,817 | -1,968,463 | -17,153,749 | -120,076,243 |
Here are some more numbers to try:
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