A:
Positive:
1 x 1901474913 x 146267329 x 65568131 x 613379377 x 50437403 x 47183899 x 211511627 x 11687
Negative:
-1 x -19014749-13 x -1462673-29 x -655681-31 x -613379-377 x -50437-403 x -47183-899 x -21151-1627 x -11687
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 19,014,749, 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 | 19,014,749 | |
| -1 | -19,014,749 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,014,749.
Example:
1 x 19,014,749 = 19,014,749
and
-1 x -19,014,749 = 19,014,749
Notice both answers equal 19,014,749
With that explanation out of the way, let's continue. Next, we take the number 19,014,749 and divide it by 2:
19,014,749 ÷ 2 = 9,507,374.5
If the quotient is a whole number, then 2 and 9,507,374.5 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 | 19,014,749 | |
| -1 | -19,014,749 |
Now, we try dividing 19,014,749 by 3:
19,014,749 ÷ 3 = 6,338,249.6667
If the quotient is a whole number, then 3 and 6,338,249.6667 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 | 19,014,749 | |
| -1 | -19,014,749 |
Let's try dividing by 4:
19,014,749 ÷ 4 = 4,753,687.25
If the quotient is a whole number, then 4 and 4,753,687.25 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 | 19,014,749 | |
| -1 | 19,014,749 |
If you did it right, you will end up with this table:
| 1 | 13 | 29 | 31 | 377 | 403 | 899 | 1,627 | 11,687 | 21,151 | 47,183 | 50,437 | 613,379 | 655,681 | 1,462,673 | 19,014,749 |
| -1 | -13 | -29 | -31 | -377 | -403 | -899 | -1,627 | -11,687 | -21,151 | -47,183 | -50,437 | -613,379 | -655,681 | -1,462,673 | -19,014,749 |
Here are some more numbers to try:
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