A:
Positive:
1 x 201167755 x 40233557 x 287382525 x 80467135 x 574765139 x 144725175 x 114953695 x 28945827 x 24325973 x 206753475 x 57894135 x 4865
Negative:
-1 x -20116775-5 x -4023355-7 x -2873825-25 x -804671-35 x -574765-139 x -144725-175 x -114953-695 x -28945-827 x -24325-973 x -20675-3475 x -5789-4135 x -4865
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 20,116,775, 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 | 20,116,775 | |
| -1 | -20,116,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,116,775.
Example:
1 x 20,116,775 = 20,116,775
and
-1 x -20,116,775 = 20,116,775
Notice both answers equal 20,116,775
With that explanation out of the way, let's continue. Next, we take the number 20,116,775 and divide it by 2:
20,116,775 ÷ 2 = 10,058,387.5
If the quotient is a whole number, then 2 and 10,058,387.5 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 | 20,116,775 | |
| -1 | -20,116,775 |
Now, we try dividing 20,116,775 by 3:
20,116,775 ÷ 3 = 6,705,591.6667
If the quotient is a whole number, then 3 and 6,705,591.6667 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 | 20,116,775 | |
| -1 | -20,116,775 |
Let's try dividing by 4:
20,116,775 ÷ 4 = 5,029,193.75
If the quotient is a whole number, then 4 and 5,029,193.75 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 | 20,116,775 | |
| -1 | 20,116,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 139 | 175 | 695 | 827 | 973 | 3,475 | 4,135 | 4,865 | 5,789 | 20,675 | 24,325 | 28,945 | 114,953 | 144,725 | 574,765 | 804,671 | 2,873,825 | 4,023,355 | 20,116,775 |
| -1 | -5 | -7 | -25 | -35 | -139 | -175 | -695 | -827 | -973 | -3,475 | -4,135 | -4,865 | -5,789 | -20,675 | -24,325 | -28,945 | -114,953 | -144,725 | -574,765 | -804,671 | -2,873,825 | -4,023,355 | -20,116,775 |
Here are some more numbers to try:
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