A:
Positive:
1 x 160208755 x 320417513 x 123237525 x 64083565 x 246475125 x 128167325 x 492951625 x 9859
Negative:
-1 x -16020875-5 x -3204175-13 x -1232375-25 x -640835-65 x -246475-125 x -128167-325 x -49295-1625 x -9859
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 16,020,875, 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 | 16,020,875 | |
| -1 | -16,020,875 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,020,875.
Example:
1 x 16,020,875 = 16,020,875
and
-1 x -16,020,875 = 16,020,875
Notice both answers equal 16,020,875
With that explanation out of the way, let's continue. Next, we take the number 16,020,875 and divide it by 2:
16,020,875 ÷ 2 = 8,010,437.5
If the quotient is a whole number, then 2 and 8,010,437.5 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 | 16,020,875 | |
| -1 | -16,020,875 |
Now, we try dividing 16,020,875 by 3:
16,020,875 ÷ 3 = 5,340,291.6667
If the quotient is a whole number, then 3 and 5,340,291.6667 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 | 16,020,875 | |
| -1 | -16,020,875 |
Let's try dividing by 4:
16,020,875 ÷ 4 = 4,005,218.75
If the quotient is a whole number, then 4 and 4,005,218.75 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 | 16,020,875 | |
| -1 | 16,020,875 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 125 | 325 | 1,625 | 9,859 | 49,295 | 128,167 | 246,475 | 640,835 | 1,232,375 | 3,204,175 | 16,020,875 |
| -1 | -5 | -13 | -25 | -65 | -125 | -325 | -1,625 | -9,859 | -49,295 | -128,167 | -246,475 | -640,835 | -1,232,375 | -3,204,175 | -16,020,875 |
Here are some more numbers to try:
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