A:
Positive:
1 x 38533150317 x 22666559107 x 3601229289 x 1333327733 x 5256911819 x 2118374913 x 7843112461 x 30923
Negative:
-1 x -385331503-17 x -22666559-107 x -3601229-289 x -1333327-733 x -525691-1819 x -211837-4913 x -78431-12461 x -30923
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 385,331,503, 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 | 385,331,503 | |
| -1 | -385,331,503 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 385,331,503.
Example:
1 x 385,331,503 = 385,331,503
and
-1 x -385,331,503 = 385,331,503
Notice both answers equal 385,331,503
With that explanation out of the way, let's continue. Next, we take the number 385,331,503 and divide it by 2:
385,331,503 ÷ 2 = 192,665,751.5
If the quotient is a whole number, then 2 and 192,665,751.5 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 | 385,331,503 | |
| -1 | -385,331,503 |
Now, we try dividing 385,331,503 by 3:
385,331,503 ÷ 3 = 128,443,834.3333
If the quotient is a whole number, then 3 and 128,443,834.3333 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 | 385,331,503 | |
| -1 | -385,331,503 |
Let's try dividing by 4:
385,331,503 ÷ 4 = 96,332,875.75
If the quotient is a whole number, then 4 and 96,332,875.75 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 | 385,331,503 | |
| -1 | 385,331,503 |
If you did it right, you will end up with this table:
| 1 | 17 | 107 | 289 | 733 | 1,819 | 4,913 | 12,461 | 30,923 | 78,431 | 211,837 | 525,691 | 1,333,327 | 3,601,229 | 22,666,559 | 385,331,503 |
| -1 | -17 | -107 | -289 | -733 | -1,819 | -4,913 | -12,461 | -30,923 | -78,431 | -211,837 | -525,691 | -1,333,327 | -3,601,229 | -22,666,559 | -385,331,503 |
Here are some more numbers to try:
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