A:
Positive:
1 x 166585155 x 333170383 x 200705137 x 121595293 x 56855415 x 40141685 x 243191465 x 11371
Negative:
-1 x -16658515-5 x -3331703-83 x -200705-137 x -121595-293 x -56855-415 x -40141-685 x -24319-1465 x -11371
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 16,658,515, 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 | 16,658,515 | |
| -1 | -16,658,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,658,515.
Example:
1 x 16,658,515 = 16,658,515
and
-1 x -16,658,515 = 16,658,515
Notice both answers equal 16,658,515
With that explanation out of the way, let's continue. Next, we take the number 16,658,515 and divide it by 2:
16,658,515 ÷ 2 = 8,329,257.5
If the quotient is a whole number, then 2 and 8,329,257.5 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 | 16,658,515 | |
| -1 | -16,658,515 |
Now, we try dividing 16,658,515 by 3:
16,658,515 ÷ 3 = 5,552,838.3333
If the quotient is a whole number, then 3 and 5,552,838.3333 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 | 16,658,515 | |
| -1 | -16,658,515 |
Let's try dividing by 4:
16,658,515 ÷ 4 = 4,164,628.75
If the quotient is a whole number, then 4 and 4,164,628.75 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 | 16,658,515 | |
| -1 | 16,658,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 83 | 137 | 293 | 415 | 685 | 1,465 | 11,371 | 24,319 | 40,141 | 56,855 | 121,595 | 200,705 | 3,331,703 | 16,658,515 |
| -1 | -5 | -83 | -137 | -293 | -415 | -685 | -1,465 | -11,371 | -24,319 | -40,141 | -56,855 | -121,595 | -200,705 | -3,331,703 | -16,658,515 |
Here are some more numbers to try:
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