A:
Positive:
1 x 3850588155 x 7701176337 x 10406995185 x 2081399647 x 5951453217 x 1196953235 x 11902916085 x 23939
Negative:
-1 x -385058815-5 x -77011763-37 x -10406995-185 x -2081399-647 x -595145-3217 x -119695-3235 x -119029-16085 x -23939
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 385,058,815, 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 | 385,058,815 | |
| -1 | -385,058,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 385,058,815.
Example:
1 x 385,058,815 = 385,058,815
and
-1 x -385,058,815 = 385,058,815
Notice both answers equal 385,058,815
With that explanation out of the way, let's continue. Next, we take the number 385,058,815 and divide it by 2:
385,058,815 ÷ 2 = 192,529,407.5
If the quotient is a whole number, then 2 and 192,529,407.5 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 | 385,058,815 | |
| -1 | -385,058,815 |
Now, we try dividing 385,058,815 by 3:
385,058,815 ÷ 3 = 128,352,938.3333
If the quotient is a whole number, then 3 and 128,352,938.3333 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 | 385,058,815 | |
| -1 | -385,058,815 |
Let's try dividing by 4:
385,058,815 ÷ 4 = 96,264,703.75
If the quotient is a whole number, then 4 and 96,264,703.75 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 | 385,058,815 | |
| -1 | 385,058,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 185 | 647 | 3,217 | 3,235 | 16,085 | 23,939 | 119,029 | 119,695 | 595,145 | 2,081,399 | 10,406,995 | 77,011,763 | 385,058,815 |
| -1 | -5 | -37 | -185 | -647 | -3,217 | -3,235 | -16,085 | -23,939 | -119,029 | -119,695 | -595,145 | -2,081,399 | -10,406,995 | -77,011,763 | -385,058,815 |
Here are some more numbers to try:
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