A:
Positive:
1 x 2010312711 x 182755723 x 874049181 x 111067253 x 79459439 x 457931991 x 100974163 x 4829
Negative:
-1 x -20103127-11 x -1827557-23 x -874049-181 x -111067-253 x -79459-439 x -45793-1991 x -10097-4163 x -4829
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 20,103,127, 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 | 20,103,127 | |
| -1 | -20,103,127 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,103,127.
Example:
1 x 20,103,127 = 20,103,127
and
-1 x -20,103,127 = 20,103,127
Notice both answers equal 20,103,127
With that explanation out of the way, let's continue. Next, we take the number 20,103,127 and divide it by 2:
20,103,127 ÷ 2 = 10,051,563.5
If the quotient is a whole number, then 2 and 10,051,563.5 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 | 20,103,127 | |
| -1 | -20,103,127 |
Now, we try dividing 20,103,127 by 3:
20,103,127 ÷ 3 = 6,701,042.3333
If the quotient is a whole number, then 3 and 6,701,042.3333 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 | 20,103,127 | |
| -1 | -20,103,127 |
Let's try dividing by 4:
20,103,127 ÷ 4 = 5,025,781.75
If the quotient is a whole number, then 4 and 5,025,781.75 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 | 20,103,127 | |
| -1 | 20,103,127 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 181 | 253 | 439 | 1,991 | 4,163 | 4,829 | 10,097 | 45,793 | 79,459 | 111,067 | 874,049 | 1,827,557 | 20,103,127 |
| -1 | -11 | -23 | -181 | -253 | -439 | -1,991 | -4,163 | -4,829 | -10,097 | -45,793 | -79,459 | -111,067 | -874,049 | -1,827,557 | -20,103,127 |
Here are some more numbers to try:
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