A:
Positive:
1 x 163945155 x 327890323 x 71280537 x 443095115 x 142561185 x 88619851 x 192653853 x 4255
Negative:
-1 x -16394515-5 x -3278903-23 x -712805-37 x -443095-115 x -142561-185 x -88619-851 x -19265-3853 x -4255
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 16,394,515, 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 | 16,394,515 | |
| -1 | -16,394,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,394,515.
Example:
1 x 16,394,515 = 16,394,515
and
-1 x -16,394,515 = 16,394,515
Notice both answers equal 16,394,515
With that explanation out of the way, let's continue. Next, we take the number 16,394,515 and divide it by 2:
16,394,515 ÷ 2 = 8,197,257.5
If the quotient is a whole number, then 2 and 8,197,257.5 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 | 16,394,515 | |
| -1 | -16,394,515 |
Now, we try dividing 16,394,515 by 3:
16,394,515 ÷ 3 = 5,464,838.3333
If the quotient is a whole number, then 3 and 5,464,838.3333 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 | 16,394,515 | |
| -1 | -16,394,515 |
Let's try dividing by 4:
16,394,515 ÷ 4 = 4,098,628.75
If the quotient is a whole number, then 4 and 4,098,628.75 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 | 16,394,515 | |
| -1 | 16,394,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 37 | 115 | 185 | 851 | 3,853 | 4,255 | 19,265 | 88,619 | 142,561 | 443,095 | 712,805 | 3,278,903 | 16,394,515 |
| -1 | -5 | -23 | -37 | -115 | -185 | -851 | -3,853 | -4,255 | -19,265 | -88,619 | -142,561 | -443,095 | -712,805 | -3,278,903 | -16,394,515 |
Here are some more numbers to try:
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