A:
Positive:
1 x 206357697 x 294796711 x 187597977 x 267997263 x 784631019 x 202511841 x 112092893 x 7133
Negative:
-1 x -20635769-7 x -2947967-11 x -1875979-77 x -267997-263 x -78463-1019 x -20251-1841 x -11209-2893 x -7133
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 20,635,769, 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 | 20,635,769 | |
| -1 | -20,635,769 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,635,769.
Example:
1 x 20,635,769 = 20,635,769
and
-1 x -20,635,769 = 20,635,769
Notice both answers equal 20,635,769
With that explanation out of the way, let's continue. Next, we take the number 20,635,769 and divide it by 2:
20,635,769 ÷ 2 = 10,317,884.5
If the quotient is a whole number, then 2 and 10,317,884.5 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 | 20,635,769 | |
| -1 | -20,635,769 |
Now, we try dividing 20,635,769 by 3:
20,635,769 ÷ 3 = 6,878,589.6667
If the quotient is a whole number, then 3 and 6,878,589.6667 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 | 20,635,769 | |
| -1 | -20,635,769 |
Let's try dividing by 4:
20,635,769 ÷ 4 = 5,158,942.25
If the quotient is a whole number, then 4 and 5,158,942.25 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 | 20,635,769 | |
| -1 | 20,635,769 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 263 | 1,019 | 1,841 | 2,893 | 7,133 | 11,209 | 20,251 | 78,463 | 267,997 | 1,875,979 | 2,947,967 | 20,635,769 |
| -1 | -7 | -11 | -77 | -263 | -1,019 | -1,841 | -2,893 | -7,133 | -11,209 | -20,251 | -78,463 | -267,997 | -1,875,979 | -2,947,967 | -20,635,769 |
Here are some more numbers to try:
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