A:
Positive:
1 x 161515555 x 32303117 x 230736535 x 461473541 x 29855853 x 189352705 x 59713787 x 4265
Negative:
-1 x -16151555-5 x -3230311-7 x -2307365-35 x -461473-541 x -29855-853 x -18935-2705 x -5971-3787 x -4265
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 16,151,555, 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 | 16,151,555 | |
| -1 | -16,151,555 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,151,555.
Example:
1 x 16,151,555 = 16,151,555
and
-1 x -16,151,555 = 16,151,555
Notice both answers equal 16,151,555
With that explanation out of the way, let's continue. Next, we take the number 16,151,555 and divide it by 2:
16,151,555 ÷ 2 = 8,075,777.5
If the quotient is a whole number, then 2 and 8,075,777.5 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 | 16,151,555 | |
| -1 | -16,151,555 |
Now, we try dividing 16,151,555 by 3:
16,151,555 ÷ 3 = 5,383,851.6667
If the quotient is a whole number, then 3 and 5,383,851.6667 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 | 16,151,555 | |
| -1 | -16,151,555 |
Let's try dividing by 4:
16,151,555 ÷ 4 = 4,037,888.75
If the quotient is a whole number, then 4 and 4,037,888.75 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 | 16,151,555 | |
| -1 | 16,151,555 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 541 | 853 | 2,705 | 3,787 | 4,265 | 5,971 | 18,935 | 29,855 | 461,473 | 2,307,365 | 3,230,311 | 16,151,555 |
| -1 | -5 | -7 | -35 | -541 | -853 | -2,705 | -3,787 | -4,265 | -5,971 | -18,935 | -29,855 | -461,473 | -2,307,365 | -3,230,311 | -16,151,555 |
Here are some more numbers to try:
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