A:
Positive:
1 x 3200230155 x 6400460313 x 2461715565 x 4923431829 x 3860354145 x 772075939 x 5388510777 x 29695
Negative:
-1 x -320023015-5 x -64004603-13 x -24617155-65 x -4923431-829 x -386035-4145 x -77207-5939 x -53885-10777 x -29695
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 320,023,015, 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 | 320,023,015 | |
| -1 | -320,023,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 320,023,015.
Example:
1 x 320,023,015 = 320,023,015
and
-1 x -320,023,015 = 320,023,015
Notice both answers equal 320,023,015
With that explanation out of the way, let's continue. Next, we take the number 320,023,015 and divide it by 2:
320,023,015 ÷ 2 = 160,011,507.5
If the quotient is a whole number, then 2 and 160,011,507.5 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 | 320,023,015 | |
| -1 | -320,023,015 |
Now, we try dividing 320,023,015 by 3:
320,023,015 ÷ 3 = 106,674,338.3333
If the quotient is a whole number, then 3 and 106,674,338.3333 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 | 320,023,015 | |
| -1 | -320,023,015 |
Let's try dividing by 4:
320,023,015 ÷ 4 = 80,005,753.75
If the quotient is a whole number, then 4 and 80,005,753.75 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 | 320,023,015 | |
| -1 | 320,023,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 829 | 4,145 | 5,939 | 10,777 | 29,695 | 53,885 | 77,207 | 386,035 | 4,923,431 | 24,617,155 | 64,004,603 | 320,023,015 |
| -1 | -5 | -13 | -65 | -829 | -4,145 | -5,939 | -10,777 | -29,695 | -53,885 | -77,207 | -386,035 | -4,923,431 | -24,617,155 | -64,004,603 | -320,023,015 |
Here are some more numbers to try:
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