A:
Positive:
1 x 1719142711 x 156285773 x 23549979 x 217613271 x 63437803 x 21409869 x 197832981 x 5767
Negative:
-1 x -17191427-11 x -1562857-73 x -235499-79 x -217613-271 x -63437-803 x -21409-869 x -19783-2981 x -5767
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 17,191,427, 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 | 17,191,427 | |
| -1 | -17,191,427 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 17,191,427.
Example:
1 x 17,191,427 = 17,191,427
and
-1 x -17,191,427 = 17,191,427
Notice both answers equal 17,191,427
With that explanation out of the way, let's continue. Next, we take the number 17,191,427 and divide it by 2:
17,191,427 ÷ 2 = 8,595,713.5
If the quotient is a whole number, then 2 and 8,595,713.5 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 | 17,191,427 | |
| -1 | -17,191,427 |
Now, we try dividing 17,191,427 by 3:
17,191,427 ÷ 3 = 5,730,475.6667
If the quotient is a whole number, then 3 and 5,730,475.6667 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 | 17,191,427 | |
| -1 | -17,191,427 |
Let's try dividing by 4:
17,191,427 ÷ 4 = 4,297,856.75
If the quotient is a whole number, then 4 and 4,297,856.75 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 | 17,191,427 | |
| -1 | 17,191,427 |
If you did it right, you will end up with this table:
| 1 | 11 | 73 | 79 | 271 | 803 | 869 | 2,981 | 5,767 | 19,783 | 21,409 | 63,437 | 217,613 | 235,499 | 1,562,857 | 17,191,427 |
| -1 | -11 | -73 | -79 | -271 | -803 | -869 | -2,981 | -5,767 | -19,783 | -21,409 | -63,437 | -217,613 | -235,499 | -1,562,857 | -17,191,427 |
Here are some more numbers to try:
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