A:
Positive:
1 x 10800472111 x 981861119 x 5684459109 x 990869121 x 892601209 x 516769431 x 2505911199 x 900792071 x 521512299 x 469794741 x 227818189 x 13189
Negative:
-1 x -108004721-11 x -9818611-19 x -5684459-109 x -990869-121 x -892601-209 x -516769-431 x -250591-1199 x -90079-2071 x -52151-2299 x -46979-4741 x -22781-8189 x -13189
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 108,004,721, 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 | 108,004,721 | |
| -1 | -108,004,721 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 108,004,721.
Example:
1 x 108,004,721 = 108,004,721
and
-1 x -108,004,721 = 108,004,721
Notice both answers equal 108,004,721
With that explanation out of the way, let's continue. Next, we take the number 108,004,721 and divide it by 2:
108,004,721 ÷ 2 = 54,002,360.5
If the quotient is a whole number, then 2 and 54,002,360.5 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 | 108,004,721 | |
| -1 | -108,004,721 |
Now, we try dividing 108,004,721 by 3:
108,004,721 ÷ 3 = 36,001,573.6667
If the quotient is a whole number, then 3 and 36,001,573.6667 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 | 108,004,721 | |
| -1 | -108,004,721 |
Let's try dividing by 4:
108,004,721 ÷ 4 = 27,001,180.25
If the quotient is a whole number, then 4 and 27,001,180.25 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 | 108,004,721 | |
| -1 | 108,004,721 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 109 | 121 | 209 | 431 | 1,199 | 2,071 | 2,299 | 4,741 | 8,189 | 13,189 | 22,781 | 46,979 | 52,151 | 90,079 | 250,591 | 516,769 | 892,601 | 990,869 | 5,684,459 | 9,818,611 | 108,004,721 |
| -1 | -11 | -19 | -109 | -121 | -209 | -431 | -1,199 | -2,071 | -2,299 | -4,741 | -8,189 | -13,189 | -22,781 | -46,979 | -52,151 | -90,079 | -250,591 | -516,769 | -892,601 | -990,869 | -5,684,459 | -9,818,611 | -108,004,721 |
Here are some more numbers to try:
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