A:
Positive:
1 x 167285055 x 334570129 x 57684543 x 389035145 x 115369215 x 778071247 x 134152683 x 6235
Negative:
-1 x -16728505-5 x -3345701-29 x -576845-43 x -389035-145 x -115369-215 x -77807-1247 x -13415-2683 x -6235
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 16,728,505, 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 | 16,728,505 | |
| -1 | -16,728,505 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,728,505.
Example:
1 x 16,728,505 = 16,728,505
and
-1 x -16,728,505 = 16,728,505
Notice both answers equal 16,728,505
With that explanation out of the way, let's continue. Next, we take the number 16,728,505 and divide it by 2:
16,728,505 ÷ 2 = 8,364,252.5
If the quotient is a whole number, then 2 and 8,364,252.5 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 | 16,728,505 | |
| -1 | -16,728,505 |
Now, we try dividing 16,728,505 by 3:
16,728,505 ÷ 3 = 5,576,168.3333
If the quotient is a whole number, then 3 and 5,576,168.3333 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 | 16,728,505 | |
| -1 | -16,728,505 |
Let's try dividing by 4:
16,728,505 ÷ 4 = 4,182,126.25
If the quotient is a whole number, then 4 and 4,182,126.25 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 | 16,728,505 | |
| -1 | 16,728,505 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 43 | 145 | 215 | 1,247 | 2,683 | 6,235 | 13,415 | 77,807 | 115,369 | 389,035 | 576,845 | 3,345,701 | 16,728,505 |
| -1 | -5 | -29 | -43 | -145 | -215 | -1,247 | -2,683 | -6,235 | -13,415 | -77,807 | -115,369 | -389,035 | -576,845 | -3,345,701 | -16,728,505 |
Here are some more numbers to try:
Try the factor calculator