A:
Positive:
1 x 132666055 x 265332111 x 120605531 x 42795555 x 241211155 x 85591251 x 52855341 x 38905961 x 138051255 x 105711705 x 77812761 x 4805
Negative:
-1 x -13266605-5 x -2653321-11 x -1206055-31 x -427955-55 x -241211-155 x -85591-251 x -52855-341 x -38905-961 x -13805-1255 x -10571-1705 x -7781-2761 x -4805
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 13,266,605, 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 | 13,266,605 | |
| -1 | -13,266,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,266,605.
Example:
1 x 13,266,605 = 13,266,605
and
-1 x -13,266,605 = 13,266,605
Notice both answers equal 13,266,605
With that explanation out of the way, let's continue. Next, we take the number 13,266,605 and divide it by 2:
13,266,605 ÷ 2 = 6,633,302.5
If the quotient is a whole number, then 2 and 6,633,302.5 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 | 13,266,605 | |
| -1 | -13,266,605 |
Now, we try dividing 13,266,605 by 3:
13,266,605 ÷ 3 = 4,422,201.6667
If the quotient is a whole number, then 3 and 4,422,201.6667 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 | 13,266,605 | |
| -1 | -13,266,605 |
Let's try dividing by 4:
13,266,605 ÷ 4 = 3,316,651.25
If the quotient is a whole number, then 4 and 3,316,651.25 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 | 13,266,605 | |
| -1 | 13,266,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 31 | 55 | 155 | 251 | 341 | 961 | 1,255 | 1,705 | 2,761 | 4,805 | 7,781 | 10,571 | 13,805 | 38,905 | 52,855 | 85,591 | 241,211 | 427,955 | 1,206,055 | 2,653,321 | 13,266,605 |
| -1 | -5 | -11 | -31 | -55 | -155 | -251 | -341 | -961 | -1,255 | -1,705 | -2,761 | -4,805 | -7,781 | -10,571 | -13,805 | -38,905 | -52,855 | -85,591 | -241,211 | -427,955 | -1,206,055 | -2,653,321 | -13,266,605 |
Here are some more numbers to try:
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