A:
Positive:
1 x 1924050711 x 174913713 x 1480039143 x 134549157 x 122551857 x 224511727 x 111412041 x 9427
Negative:
-1 x -19240507-11 x -1749137-13 x -1480039-143 x -134549-157 x -122551-857 x -22451-1727 x -11141-2041 x -9427
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 19,240,507, 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 | 19,240,507 | |
| -1 | -19,240,507 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,240,507.
Example:
1 x 19,240,507 = 19,240,507
and
-1 x -19,240,507 = 19,240,507
Notice both answers equal 19,240,507
With that explanation out of the way, let's continue. Next, we take the number 19,240,507 and divide it by 2:
19,240,507 ÷ 2 = 9,620,253.5
If the quotient is a whole number, then 2 and 9,620,253.5 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 | 19,240,507 | |
| -1 | -19,240,507 |
Now, we try dividing 19,240,507 by 3:
19,240,507 ÷ 3 = 6,413,502.3333
If the quotient is a whole number, then 3 and 6,413,502.3333 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 | 19,240,507 | |
| -1 | -19,240,507 |
Let's try dividing by 4:
19,240,507 ÷ 4 = 4,810,126.75
If the quotient is a whole number, then 4 and 4,810,126.75 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 | 19,240,507 | |
| -1 | 19,240,507 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 157 | 857 | 1,727 | 2,041 | 9,427 | 11,141 | 22,451 | 122,551 | 134,549 | 1,480,039 | 1,749,137 | 19,240,507 |
| -1 | -11 | -13 | -143 | -157 | -857 | -1,727 | -2,041 | -9,427 | -11,141 | -22,451 | -122,551 | -134,549 | -1,480,039 | -1,749,137 | -19,240,507 |
Here are some more numbers to try:
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