A:
Positive:
1 x 160778055 x 321556123 x 699035115 x 139807251 x 64055557 x 288651255 x 128112785 x 5773
Negative:
-1 x -16077805-5 x -3215561-23 x -699035-115 x -139807-251 x -64055-557 x -28865-1255 x -12811-2785 x -5773
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 16,077,805, 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 | 16,077,805 | |
| -1 | -16,077,805 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,077,805.
Example:
1 x 16,077,805 = 16,077,805
and
-1 x -16,077,805 = 16,077,805
Notice both answers equal 16,077,805
With that explanation out of the way, let's continue. Next, we take the number 16,077,805 and divide it by 2:
16,077,805 ÷ 2 = 8,038,902.5
If the quotient is a whole number, then 2 and 8,038,902.5 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 | 16,077,805 | |
| -1 | -16,077,805 |
Now, we try dividing 16,077,805 by 3:
16,077,805 ÷ 3 = 5,359,268.3333
If the quotient is a whole number, then 3 and 5,359,268.3333 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 | 16,077,805 | |
| -1 | -16,077,805 |
Let's try dividing by 4:
16,077,805 ÷ 4 = 4,019,451.25
If the quotient is a whole number, then 4 and 4,019,451.25 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 | 16,077,805 | |
| -1 | 16,077,805 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 251 | 557 | 1,255 | 2,785 | 5,773 | 12,811 | 28,865 | 64,055 | 139,807 | 699,035 | 3,215,561 | 16,077,805 |
| -1 | -5 | -23 | -115 | -251 | -557 | -1,255 | -2,785 | -5,773 | -12,811 | -28,865 | -64,055 | -139,807 | -699,035 | -3,215,561 | -16,077,805 |
Here are some more numbers to try:
Try the factor calculator