A:
Positive:
1 x 1668740155 x 333748037 x 2383914511 x 1517036535 x 476782955 x 303407377 x 2167195385 x 433439
Negative:
-1 x -166874015-5 x -33374803-7 x -23839145-11 x -15170365-35 x -4767829-55 x -3034073-77 x -2167195-385 x -433439
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 166,874,015, 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 | 166,874,015 | |
| -1 | -166,874,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 166,874,015.
Example:
1 x 166,874,015 = 166,874,015
and
-1 x -166,874,015 = 166,874,015
Notice both answers equal 166,874,015
With that explanation out of the way, let's continue. Next, we take the number 166,874,015 and divide it by 2:
166,874,015 ÷ 2 = 83,437,007.5
If the quotient is a whole number, then 2 and 83,437,007.5 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 | 166,874,015 | |
| -1 | -166,874,015 |
Now, we try dividing 166,874,015 by 3:
166,874,015 ÷ 3 = 55,624,671.6667
If the quotient is a whole number, then 3 and 55,624,671.6667 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 | 166,874,015 | |
| -1 | -166,874,015 |
Let's try dividing by 4:
166,874,015 ÷ 4 = 41,718,503.75
If the quotient is a whole number, then 4 and 41,718,503.75 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 | 166,874,015 | |
| -1 | 166,874,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 433,439 | 2,167,195 | 3,034,073 | 4,767,829 | 15,170,365 | 23,839,145 | 33,374,803 | 166,874,015 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -433,439 | -2,167,195 | -3,034,073 | -4,767,829 | -15,170,365 | -23,839,145 | -33,374,803 | -166,874,015 |
Here are some more numbers to try:
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