A:
Positive:
1 x 3073859919 x 1617821103 x 298433113 x 272023139 x 2211411957 x 157072147 x 143172641 x 11639
Negative:
-1 x -30738599-19 x -1617821-103 x -298433-113 x -272023-139 x -221141-1957 x -15707-2147 x -14317-2641 x -11639
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 30,738,599, 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 | 30,738,599 | |
| -1 | -30,738,599 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,738,599.
Example:
1 x 30,738,599 = 30,738,599
and
-1 x -30,738,599 = 30,738,599
Notice both answers equal 30,738,599
With that explanation out of the way, let's continue. Next, we take the number 30,738,599 and divide it by 2:
30,738,599 ÷ 2 = 15,369,299.5
If the quotient is a whole number, then 2 and 15,369,299.5 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 | 30,738,599 | |
| -1 | -30,738,599 |
Now, we try dividing 30,738,599 by 3:
30,738,599 ÷ 3 = 10,246,199.6667
If the quotient is a whole number, then 3 and 10,246,199.6667 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 | 30,738,599 | |
| -1 | -30,738,599 |
Let's try dividing by 4:
30,738,599 ÷ 4 = 7,684,649.75
If the quotient is a whole number, then 4 and 7,684,649.75 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 | 30,738,599 | |
| -1 | 30,738,599 |
If you did it right, you will end up with this table:
| 1 | 19 | 103 | 113 | 139 | 1,957 | 2,147 | 2,641 | 11,639 | 14,317 | 15,707 | 221,141 | 272,023 | 298,433 | 1,617,821 | 30,738,599 |
| -1 | -19 | -103 | -113 | -139 | -1,957 | -2,147 | -2,641 | -11,639 | -14,317 | -15,707 | -221,141 | -272,023 | -298,433 | -1,617,821 | -30,738,599 |
Here are some more numbers to try:
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