A:
Positive:
1 x 120171555 x 240343123 x 52248583 x 144785115 x 104497415 x 289571259 x 95451909 x 6295
Negative:
-1 x -12017155-5 x -2403431-23 x -522485-83 x -144785-115 x -104497-415 x -28957-1259 x -9545-1909 x -6295
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 12,017,155, 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 | 12,017,155 | |
| -1 | -12,017,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,017,155.
Example:
1 x 12,017,155 = 12,017,155
and
-1 x -12,017,155 = 12,017,155
Notice both answers equal 12,017,155
With that explanation out of the way, let's continue. Next, we take the number 12,017,155 and divide it by 2:
12,017,155 ÷ 2 = 6,008,577.5
If the quotient is a whole number, then 2 and 6,008,577.5 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 | 12,017,155 | |
| -1 | -12,017,155 |
Now, we try dividing 12,017,155 by 3:
12,017,155 ÷ 3 = 4,005,718.3333
If the quotient is a whole number, then 3 and 4,005,718.3333 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 | 12,017,155 | |
| -1 | -12,017,155 |
Let's try dividing by 4:
12,017,155 ÷ 4 = 3,004,288.75
If the quotient is a whole number, then 4 and 3,004,288.75 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 | 12,017,155 | |
| -1 | 12,017,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 83 | 115 | 415 | 1,259 | 1,909 | 6,295 | 9,545 | 28,957 | 104,497 | 144,785 | 522,485 | 2,403,431 | 12,017,155 |
| -1 | -5 | -23 | -83 | -115 | -415 | -1,259 | -1,909 | -6,295 | -9,545 | -28,957 | -104,497 | -144,785 | -522,485 | -2,403,431 | -12,017,155 |
Here are some more numbers to try:
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