A:
Positive:
1 x 196500017 x 280714331 x 63387183 x 236747217 x 90553581 x 338211091 x 180112573 x 7637
Negative:
-1 x -19650001-7 x -2807143-31 x -633871-83 x -236747-217 x -90553-581 x -33821-1091 x -18011-2573 x -7637
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 19,650,001, 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 | 19,650,001 | |
| -1 | -19,650,001 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,650,001.
Example:
1 x 19,650,001 = 19,650,001
and
-1 x -19,650,001 = 19,650,001
Notice both answers equal 19,650,001
With that explanation out of the way, let's continue. Next, we take the number 19,650,001 and divide it by 2:
19,650,001 ÷ 2 = 9,825,000.5
If the quotient is a whole number, then 2 and 9,825,000.5 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 | 19,650,001 | |
| -1 | -19,650,001 |
Now, we try dividing 19,650,001 by 3:
19,650,001 ÷ 3 = 6,550,000.3333
If the quotient is a whole number, then 3 and 6,550,000.3333 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 | 19,650,001 | |
| -1 | -19,650,001 |
Let's try dividing by 4:
19,650,001 ÷ 4 = 4,912,500.25
If the quotient is a whole number, then 4 and 4,912,500.25 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 | 19,650,001 | |
| -1 | 19,650,001 |
If you did it right, you will end up with this table:
| 1 | 7 | 31 | 83 | 217 | 581 | 1,091 | 2,573 | 7,637 | 18,011 | 33,821 | 90,553 | 236,747 | 633,871 | 2,807,143 | 19,650,001 |
| -1 | -7 | -31 | -83 | -217 | -581 | -1,091 | -2,573 | -7,637 | -18,011 | -33,821 | -90,553 | -236,747 | -633,871 | -2,807,143 | -19,650,001 |
Here are some more numbers to try:
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