A:
Positive:
1 x 3098205131 x 99942153 x 584567109 x 284239173 x 1790871643 x 188573379 x 91695363 x 5777
Negative:
-1 x -30982051-31 x -999421-53 x -584567-109 x -284239-173 x -179087-1643 x -18857-3379 x -9169-5363 x -5777
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 30,982,051, 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 | 30,982,051 | |
| -1 | -30,982,051 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,982,051.
Example:
1 x 30,982,051 = 30,982,051
and
-1 x -30,982,051 = 30,982,051
Notice both answers equal 30,982,051
With that explanation out of the way, let's continue. Next, we take the number 30,982,051 and divide it by 2:
30,982,051 ÷ 2 = 15,491,025.5
If the quotient is a whole number, then 2 and 15,491,025.5 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 | 30,982,051 | |
| -1 | -30,982,051 |
Now, we try dividing 30,982,051 by 3:
30,982,051 ÷ 3 = 10,327,350.3333
If the quotient is a whole number, then 3 and 10,327,350.3333 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 | 30,982,051 | |
| -1 | -30,982,051 |
Let's try dividing by 4:
30,982,051 ÷ 4 = 7,745,512.75
If the quotient is a whole number, then 4 and 7,745,512.75 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 | 30,982,051 | |
| -1 | 30,982,051 |
If you did it right, you will end up with this table:
| 1 | 31 | 53 | 109 | 173 | 1,643 | 3,379 | 5,363 | 5,777 | 9,169 | 18,857 | 179,087 | 284,239 | 584,567 | 999,421 | 30,982,051 |
| -1 | -31 | -53 | -109 | -173 | -1,643 | -3,379 | -5,363 | -5,777 | -9,169 | -18,857 | -179,087 | -284,239 | -584,567 | -999,421 | -30,982,051 |
Here are some more numbers to try:
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