A:
Positive:
1 x 3021112119 x 159005923 x 1313527257 x 117553269 x 112309437 x 691334883 x 61875111 x 5911
Negative:
-1 x -30211121-19 x -1590059-23 x -1313527-257 x -117553-269 x -112309-437 x -69133-4883 x -6187-5111 x -5911
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 30,211,121, 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 | 30,211,121 | |
| -1 | -30,211,121 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,211,121.
Example:
1 x 30,211,121 = 30,211,121
and
-1 x -30,211,121 = 30,211,121
Notice both answers equal 30,211,121
With that explanation out of the way, let's continue. Next, we take the number 30,211,121 and divide it by 2:
30,211,121 ÷ 2 = 15,105,560.5
If the quotient is a whole number, then 2 and 15,105,560.5 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 | 30,211,121 | |
| -1 | -30,211,121 |
Now, we try dividing 30,211,121 by 3:
30,211,121 ÷ 3 = 10,070,373.6667
If the quotient is a whole number, then 3 and 10,070,373.6667 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 | 30,211,121 | |
| -1 | -30,211,121 |
Let's try dividing by 4:
30,211,121 ÷ 4 = 7,552,780.25
If the quotient is a whole number, then 4 and 7,552,780.25 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 | 30,211,121 | |
| -1 | 30,211,121 |
If you did it right, you will end up with this table:
| 1 | 19 | 23 | 257 | 269 | 437 | 4,883 | 5,111 | 5,911 | 6,187 | 69,133 | 112,309 | 117,553 | 1,313,527 | 1,590,059 | 30,211,121 |
| -1 | -19 | -23 | -257 | -269 | -437 | -4,883 | -5,111 | -5,911 | -6,187 | -69,133 | -112,309 | -117,553 | -1,313,527 | -1,590,059 | -30,211,121 |
Here are some more numbers to try:
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