A:
Positive:
1 x 331208655 x 662417331 x 106841561 x 542965113 x 293105155 x 213683305 x 108593565 x 58621961 x 344651891 x 175153503 x 94554805 x 6893
Negative:
-1 x -33120865-5 x -6624173-31 x -1068415-61 x -542965-113 x -293105-155 x -213683-305 x -108593-565 x -58621-961 x -34465-1891 x -17515-3503 x -9455-4805 x -6893
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 33,120,865, 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 | 33,120,865 | |
| -1 | -33,120,865 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 33,120,865.
Example:
1 x 33,120,865 = 33,120,865
and
-1 x -33,120,865 = 33,120,865
Notice both answers equal 33,120,865
With that explanation out of the way, let's continue. Next, we take the number 33,120,865 and divide it by 2:
33,120,865 ÷ 2 = 16,560,432.5
If the quotient is a whole number, then 2 and 16,560,432.5 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 | 33,120,865 | |
| -1 | -33,120,865 |
Now, we try dividing 33,120,865 by 3:
33,120,865 ÷ 3 = 11,040,288.3333
If the quotient is a whole number, then 3 and 11,040,288.3333 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 | 33,120,865 | |
| -1 | -33,120,865 |
Let's try dividing by 4:
33,120,865 ÷ 4 = 8,280,216.25
If the quotient is a whole number, then 4 and 8,280,216.25 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 | 33,120,865 | |
| -1 | 33,120,865 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 61 | 113 | 155 | 305 | 565 | 961 | 1,891 | 3,503 | 4,805 | 6,893 | 9,455 | 17,515 | 34,465 | 58,621 | 108,593 | 213,683 | 293,105 | 542,965 | 1,068,415 | 6,624,173 | 33,120,865 |
| -1 | -5 | -31 | -61 | -113 | -155 | -305 | -565 | -961 | -1,891 | -3,503 | -4,805 | -6,893 | -9,455 | -17,515 | -34,465 | -58,621 | -108,593 | -213,683 | -293,105 | -542,965 | -1,068,415 | -6,624,173 | -33,120,865 |
Here are some more numbers to try:
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