A:
Positive:
1 x 206755017 x 295364311 x 187959149 x 42194977 x 26851389 x 232309431 x 47971539 x 38359623 x 33187979 x 211193017 x 68534361 x 4741
Negative:
-1 x -20675501-7 x -2953643-11 x -1879591-49 x -421949-77 x -268513-89 x -232309-431 x -47971-539 x -38359-623 x -33187-979 x -21119-3017 x -6853-4361 x -4741
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 20,675,501, 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 | 20,675,501 | |
| -1 | -20,675,501 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,675,501.
Example:
1 x 20,675,501 = 20,675,501
and
-1 x -20,675,501 = 20,675,501
Notice both answers equal 20,675,501
With that explanation out of the way, let's continue. Next, we take the number 20,675,501 and divide it by 2:
20,675,501 ÷ 2 = 10,337,750.5
If the quotient is a whole number, then 2 and 10,337,750.5 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 | 20,675,501 | |
| -1 | -20,675,501 |
Now, we try dividing 20,675,501 by 3:
20,675,501 ÷ 3 = 6,891,833.6667
If the quotient is a whole number, then 3 and 6,891,833.6667 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 | 20,675,501 | |
| -1 | -20,675,501 |
Let's try dividing by 4:
20,675,501 ÷ 4 = 5,168,875.25
If the quotient is a whole number, then 4 and 5,168,875.25 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 | 20,675,501 | |
| -1 | 20,675,501 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 49 | 77 | 89 | 431 | 539 | 623 | 979 | 3,017 | 4,361 | 4,741 | 6,853 | 21,119 | 33,187 | 38,359 | 47,971 | 232,309 | 268,513 | 421,949 | 1,879,591 | 2,953,643 | 20,675,501 |
| -1 | -7 | -11 | -49 | -77 | -89 | -431 | -539 | -623 | -979 | -3,017 | -4,361 | -4,741 | -6,853 | -21,119 | -33,187 | -38,359 | -47,971 | -232,309 | -268,513 | -421,949 | -1,879,591 | -2,953,643 | -20,675,501 |
Here are some more numbers to try:
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