A:
Positive:
1 x 3086471055 x 6172942113 x 2374208565 x 474841789 x 3467945445 x 6935891157 x 2667655785 x 53353
Negative:
-1 x -308647105-5 x -61729421-13 x -23742085-65 x -4748417-89 x -3467945-445 x -693589-1157 x -266765-5785 x -53353
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 308,647,105, 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 | 308,647,105 | |
| -1 | -308,647,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 308,647,105.
Example:
1 x 308,647,105 = 308,647,105
and
-1 x -308,647,105 = 308,647,105
Notice both answers equal 308,647,105
With that explanation out of the way, let's continue. Next, we take the number 308,647,105 and divide it by 2:
308,647,105 ÷ 2 = 154,323,552.5
If the quotient is a whole number, then 2 and 154,323,552.5 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 | 308,647,105 | |
| -1 | -308,647,105 |
Now, we try dividing 308,647,105 by 3:
308,647,105 ÷ 3 = 102,882,368.3333
If the quotient is a whole number, then 3 and 102,882,368.3333 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 | 308,647,105 | |
| -1 | -308,647,105 |
Let's try dividing by 4:
308,647,105 ÷ 4 = 77,161,776.25
If the quotient is a whole number, then 4 and 77,161,776.25 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 | 308,647,105 | |
| -1 | 308,647,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 89 | 445 | 1,157 | 5,785 | 53,353 | 266,765 | 693,589 | 3,467,945 | 4,748,417 | 23,742,085 | 61,729,421 | 308,647,105 |
| -1 | -5 | -13 | -65 | -89 | -445 | -1,157 | -5,785 | -53,353 | -266,765 | -693,589 | -3,467,945 | -4,748,417 | -23,742,085 | -61,729,421 | -308,647,105 |
Here are some more numbers to try:
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