A:
Positive:
1 x 160289155 x 32057837 x 228984535 x 457969157 x 102095785 x 204191099 x 145852917 x 5495
Negative:
-1 x -16028915-5 x -3205783-7 x -2289845-35 x -457969-157 x -102095-785 x -20419-1099 x -14585-2917 x -5495
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 16,028,915, 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 | 16,028,915 | |
| -1 | -16,028,915 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,028,915.
Example:
1 x 16,028,915 = 16,028,915
and
-1 x -16,028,915 = 16,028,915
Notice both answers equal 16,028,915
With that explanation out of the way, let's continue. Next, we take the number 16,028,915 and divide it by 2:
16,028,915 ÷ 2 = 8,014,457.5
If the quotient is a whole number, then 2 and 8,014,457.5 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 | 16,028,915 | |
| -1 | -16,028,915 |
Now, we try dividing 16,028,915 by 3:
16,028,915 ÷ 3 = 5,342,971.6667
If the quotient is a whole number, then 3 and 5,342,971.6667 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 | 16,028,915 | |
| -1 | -16,028,915 |
Let's try dividing by 4:
16,028,915 ÷ 4 = 4,007,228.75
If the quotient is a whole number, then 4 and 4,007,228.75 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 | 16,028,915 | |
| -1 | 16,028,915 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 157 | 785 | 1,099 | 2,917 | 5,495 | 14,585 | 20,419 | 102,095 | 457,969 | 2,289,845 | 3,205,783 | 16,028,915 |
| -1 | -5 | -7 | -35 | -157 | -785 | -1,099 | -2,917 | -5,495 | -14,585 | -20,419 | -102,095 | -457,969 | -2,289,845 | -3,205,783 | -16,028,915 |
Here are some more numbers to try:
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