A:
Positive:
1 x 165308655 x 330617313 x 127160565 x 254321263 x 62855967 x 170951315 x 125713419 x 4835
Negative:
-1 x -16530865-5 x -3306173-13 x -1271605-65 x -254321-263 x -62855-967 x -17095-1315 x -12571-3419 x -4835
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 16,530,865, 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 | 16,530,865 | |
| -1 | -16,530,865 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,530,865.
Example:
1 x 16,530,865 = 16,530,865
and
-1 x -16,530,865 = 16,530,865
Notice both answers equal 16,530,865
With that explanation out of the way, let's continue. Next, we take the number 16,530,865 and divide it by 2:
16,530,865 ÷ 2 = 8,265,432.5
If the quotient is a whole number, then 2 and 8,265,432.5 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 | 16,530,865 | |
| -1 | -16,530,865 |
Now, we try dividing 16,530,865 by 3:
16,530,865 ÷ 3 = 5,510,288.3333
If the quotient is a whole number, then 3 and 5,510,288.3333 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 | 16,530,865 | |
| -1 | -16,530,865 |
Let's try dividing by 4:
16,530,865 ÷ 4 = 4,132,716.25
If the quotient is a whole number, then 4 and 4,132,716.25 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 | 16,530,865 | |
| -1 | 16,530,865 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 263 | 967 | 1,315 | 3,419 | 4,835 | 12,571 | 17,095 | 62,855 | 254,321 | 1,271,605 | 3,306,173 | 16,530,865 |
| -1 | -5 | -13 | -65 | -263 | -967 | -1,315 | -3,419 | -4,835 | -12,571 | -17,095 | -62,855 | -254,321 | -1,271,605 | -3,306,173 | -16,530,865 |
Here are some more numbers to try:
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