A:
Positive:
1 x 200310117 x 286157311 x 182100113 x 154084777 x 26014391 x 220121143 x 1400771001 x 20011
Negative:
-1 x -20031011-7 x -2861573-11 x -1821001-13 x -1540847-77 x -260143-91 x -220121-143 x -140077-1001 x -20011
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 20,031,011, 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 | 20,031,011 | |
| -1 | -20,031,011 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,031,011.
Example:
1 x 20,031,011 = 20,031,011
and
-1 x -20,031,011 = 20,031,011
Notice both answers equal 20,031,011
With that explanation out of the way, let's continue. Next, we take the number 20,031,011 and divide it by 2:
20,031,011 ÷ 2 = 10,015,505.5
If the quotient is a whole number, then 2 and 10,015,505.5 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 | 20,031,011 | |
| -1 | -20,031,011 |
Now, we try dividing 20,031,011 by 3:
20,031,011 ÷ 3 = 6,677,003.6667
If the quotient is a whole number, then 3 and 6,677,003.6667 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 | 20,031,011 | |
| -1 | -20,031,011 |
Let's try dividing by 4:
20,031,011 ÷ 4 = 5,007,752.75
If the quotient is a whole number, then 4 and 5,007,752.75 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 | 20,031,011 | |
| -1 | 20,031,011 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 77 | 91 | 143 | 1,001 | 20,011 | 140,077 | 220,121 | 260,143 | 1,540,847 | 1,821,001 | 2,861,573 | 20,031,011 |
| -1 | -7 | -11 | -13 | -77 | -91 | -143 | -1,001 | -20,011 | -140,077 | -220,121 | -260,143 | -1,540,847 | -1,821,001 | -2,861,573 | -20,031,011 |
Here are some more numbers to try:
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