A:
Positive:
1 x 1006687855 x 201337577 x 1438125535 x 287625149 x 2054465245 x 410893343 x 2934951715 x 58699
Negative:
-1 x -100668785-5 x -20133757-7 x -14381255-35 x -2876251-49 x -2054465-245 x -410893-343 x -293495-1715 x -58699
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 100,668,785, 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 | 100,668,785 | |
| -1 | -100,668,785 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 100,668,785.
Example:
1 x 100,668,785 = 100,668,785
and
-1 x -100,668,785 = 100,668,785
Notice both answers equal 100,668,785
With that explanation out of the way, let's continue. Next, we take the number 100,668,785 and divide it by 2:
100,668,785 ÷ 2 = 50,334,392.5
If the quotient is a whole number, then 2 and 50,334,392.5 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 | 100,668,785 | |
| -1 | -100,668,785 |
Now, we try dividing 100,668,785 by 3:
100,668,785 ÷ 3 = 33,556,261.6667
If the quotient is a whole number, then 3 and 33,556,261.6667 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 | 100,668,785 | |
| -1 | -100,668,785 |
Let's try dividing by 4:
100,668,785 ÷ 4 = 25,167,196.25
If the quotient is a whole number, then 4 and 25,167,196.25 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 | 100,668,785 | |
| -1 | 100,668,785 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 245 | 343 | 1,715 | 58,699 | 293,495 | 410,893 | 2,054,465 | 2,876,251 | 14,381,255 | 20,133,757 | 100,668,785 |
| -1 | -5 | -7 | -35 | -49 | -245 | -343 | -1,715 | -58,699 | -293,495 | -410,893 | -2,054,465 | -2,876,251 | -14,381,255 | -20,133,757 | -100,668,785 |
Here are some more numbers to try:
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