A:
Positive:
1 x 166613155 x 333226311 x 151466523 x 72440555 x 302933115 x 144881253 x 658551265 x 13171
Negative:
-1 x -16661315-5 x -3332263-11 x -1514665-23 x -724405-55 x -302933-115 x -144881-253 x -65855-1265 x -13171
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 16,661,315, 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 | 16,661,315 | |
| -1 | -16,661,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,661,315.
Example:
1 x 16,661,315 = 16,661,315
and
-1 x -16,661,315 = 16,661,315
Notice both answers equal 16,661,315
With that explanation out of the way, let's continue. Next, we take the number 16,661,315 and divide it by 2:
16,661,315 ÷ 2 = 8,330,657.5
If the quotient is a whole number, then 2 and 8,330,657.5 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 | 16,661,315 | |
| -1 | -16,661,315 |
Now, we try dividing 16,661,315 by 3:
16,661,315 ÷ 3 = 5,553,771.6667
If the quotient is a whole number, then 3 and 5,553,771.6667 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 | 16,661,315 | |
| -1 | -16,661,315 |
Let's try dividing by 4:
16,661,315 ÷ 4 = 4,165,328.75
If the quotient is a whole number, then 4 and 4,165,328.75 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 | 16,661,315 | |
| -1 | 16,661,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 23 | 55 | 115 | 253 | 1,265 | 13,171 | 65,855 | 144,881 | 302,933 | 724,405 | 1,514,665 | 3,332,263 | 16,661,315 |
| -1 | -5 | -11 | -23 | -55 | -115 | -253 | -1,265 | -13,171 | -65,855 | -144,881 | -302,933 | -724,405 | -1,514,665 | -3,332,263 | -16,661,315 |
Here are some more numbers to try:
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