A:
Positive:
1 x 331001455 x 662002913 x 254616565 x 509233241 x 1373451205 x 274692113 x 156653133 x 10565
Negative:
-1 x -33100145-5 x -6620029-13 x -2546165-65 x -509233-241 x -137345-1205 x -27469-2113 x -15665-3133 x -10565
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 33,100,145, 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 | 33,100,145 | |
| -1 | -33,100,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 33,100,145.
Example:
1 x 33,100,145 = 33,100,145
and
-1 x -33,100,145 = 33,100,145
Notice both answers equal 33,100,145
With that explanation out of the way, let's continue. Next, we take the number 33,100,145 and divide it by 2:
33,100,145 ÷ 2 = 16,550,072.5
If the quotient is a whole number, then 2 and 16,550,072.5 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 | 33,100,145 | |
| -1 | -33,100,145 |
Now, we try dividing 33,100,145 by 3:
33,100,145 ÷ 3 = 11,033,381.6667
If the quotient is a whole number, then 3 and 11,033,381.6667 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 | 33,100,145 | |
| -1 | -33,100,145 |
Let's try dividing by 4:
33,100,145 ÷ 4 = 8,275,036.25
If the quotient is a whole number, then 4 and 8,275,036.25 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 | 33,100,145 | |
| -1 | 33,100,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 241 | 1,205 | 2,113 | 3,133 | 10,565 | 15,665 | 27,469 | 137,345 | 509,233 | 2,546,165 | 6,620,029 | 33,100,145 |
| -1 | -5 | -13 | -65 | -241 | -1,205 | -2,113 | -3,133 | -10,565 | -15,665 | -27,469 | -137,345 | -509,233 | -2,546,165 | -6,620,029 | -33,100,145 |
Here are some more numbers to try:
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