A:
Positive:
1 x 304868455 x 609736923 x 1325515115 x 265103353 x 86365751 x 405951765 x 172733755 x 8119
Negative:
-1 x -30486845-5 x -6097369-23 x -1325515-115 x -265103-353 x -86365-751 x -40595-1765 x -17273-3755 x -8119
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 30,486,845, 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 | 30,486,845 | |
| -1 | -30,486,845 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,486,845.
Example:
1 x 30,486,845 = 30,486,845
and
-1 x -30,486,845 = 30,486,845
Notice both answers equal 30,486,845
With that explanation out of the way, let's continue. Next, we take the number 30,486,845 and divide it by 2:
30,486,845 ÷ 2 = 15,243,422.5
If the quotient is a whole number, then 2 and 15,243,422.5 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 | 30,486,845 | |
| -1 | -30,486,845 |
Now, we try dividing 30,486,845 by 3:
30,486,845 ÷ 3 = 10,162,281.6667
If the quotient is a whole number, then 3 and 10,162,281.6667 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 | 30,486,845 | |
| -1 | -30,486,845 |
Let's try dividing by 4:
30,486,845 ÷ 4 = 7,621,711.25
If the quotient is a whole number, then 4 and 7,621,711.25 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 | 30,486,845 | |
| -1 | 30,486,845 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 353 | 751 | 1,765 | 3,755 | 8,119 | 17,273 | 40,595 | 86,365 | 265,103 | 1,325,515 | 6,097,369 | 30,486,845 |
| -1 | -5 | -23 | -115 | -353 | -751 | -1,765 | -3,755 | -8,119 | -17,273 | -40,595 | -86,365 | -265,103 | -1,325,515 | -6,097,369 | -30,486,845 |
Here are some more numbers to try:
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