A:
Positive:
1 x 1662812155 x 3325624329 x 573383543 x 3867005145 x 1146767215 x 7734011247 x 1333456235 x 26669
Negative:
-1 x -166281215-5 x -33256243-29 x -5733835-43 x -3867005-145 x -1146767-215 x -773401-1247 x -133345-6235 x -26669
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 166,281,215, 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 | 166,281,215 | |
| -1 | -166,281,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 166,281,215.
Example:
1 x 166,281,215 = 166,281,215
and
-1 x -166,281,215 = 166,281,215
Notice both answers equal 166,281,215
With that explanation out of the way, let's continue. Next, we take the number 166,281,215 and divide it by 2:
166,281,215 ÷ 2 = 83,140,607.5
If the quotient is a whole number, then 2 and 83,140,607.5 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 | 166,281,215 | |
| -1 | -166,281,215 |
Now, we try dividing 166,281,215 by 3:
166,281,215 ÷ 3 = 55,427,071.6667
If the quotient is a whole number, then 3 and 55,427,071.6667 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 | 166,281,215 | |
| -1 | -166,281,215 |
Let's try dividing by 4:
166,281,215 ÷ 4 = 41,570,303.75
If the quotient is a whole number, then 4 and 41,570,303.75 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 | 166,281,215 | |
| -1 | 166,281,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 43 | 145 | 215 | 1,247 | 6,235 | 26,669 | 133,345 | 773,401 | 1,146,767 | 3,867,005 | 5,733,835 | 33,256,243 | 166,281,215 |
| -1 | -5 | -29 | -43 | -145 | -215 | -1,247 | -6,235 | -26,669 | -133,345 | -773,401 | -1,146,767 | -3,867,005 | -5,733,835 | -33,256,243 | -166,281,215 |
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