A:
Positive:
1 x 3081316317 x 181253931 x 99397359 x 522257527 x 58469991 x 310931003 x 307211829 x 16847
Negative:
-1 x -30813163-17 x -1812539-31 x -993973-59 x -522257-527 x -58469-991 x -31093-1003 x -30721-1829 x -16847
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 30,813,163, 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 | 30,813,163 | |
| -1 | -30,813,163 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,813,163.
Example:
1 x 30,813,163 = 30,813,163
and
-1 x -30,813,163 = 30,813,163
Notice both answers equal 30,813,163
With that explanation out of the way, let's continue. Next, we take the number 30,813,163 and divide it by 2:
30,813,163 ÷ 2 = 15,406,581.5
If the quotient is a whole number, then 2 and 15,406,581.5 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 | 30,813,163 | |
| -1 | -30,813,163 |
Now, we try dividing 30,813,163 by 3:
30,813,163 ÷ 3 = 10,271,054.3333
If the quotient is a whole number, then 3 and 10,271,054.3333 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 | 30,813,163 | |
| -1 | -30,813,163 |
Let's try dividing by 4:
30,813,163 ÷ 4 = 7,703,290.75
If the quotient is a whole number, then 4 and 7,703,290.75 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 | 30,813,163 | |
| -1 | 30,813,163 |
If you did it right, you will end up with this table:
| 1 | 17 | 31 | 59 | 527 | 991 | 1,003 | 1,829 | 16,847 | 30,721 | 31,093 | 58,469 | 522,257 | 993,973 | 1,812,539 | 30,813,163 |
| -1 | -17 | -31 | -59 | -527 | -991 | -1,003 | -1,829 | -16,847 | -30,721 | -31,093 | -58,469 | -522,257 | -993,973 | -1,812,539 | -30,813,163 |
Here are some more numbers to try:
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