A:
Positive:
1 x 178074655 x 356149313 x 136980519 x 93723565 x 27396195 x 187447247 x 720951235 x 14419
Negative:
-1 x -17807465-5 x -3561493-13 x -1369805-19 x -937235-65 x -273961-95 x -187447-247 x -72095-1235 x -14419
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 17,807,465, 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 | 17,807,465 | |
| -1 | -17,807,465 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 17,807,465.
Example:
1 x 17,807,465 = 17,807,465
and
-1 x -17,807,465 = 17,807,465
Notice both answers equal 17,807,465
With that explanation out of the way, let's continue. Next, we take the number 17,807,465 and divide it by 2:
17,807,465 ÷ 2 = 8,903,732.5
If the quotient is a whole number, then 2 and 8,903,732.5 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 | 17,807,465 | |
| -1 | -17,807,465 |
Now, we try dividing 17,807,465 by 3:
17,807,465 ÷ 3 = 5,935,821.6667
If the quotient is a whole number, then 3 and 5,935,821.6667 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 | 17,807,465 | |
| -1 | -17,807,465 |
Let's try dividing by 4:
17,807,465 ÷ 4 = 4,451,866.25
If the quotient is a whole number, then 4 and 4,451,866.25 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 | 17,807,465 | |
| -1 | 17,807,465 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 19 | 65 | 95 | 247 | 1,235 | 14,419 | 72,095 | 187,447 | 273,961 | 937,235 | 1,369,805 | 3,561,493 | 17,807,465 |
| -1 | -5 | -13 | -19 | -65 | -95 | -247 | -1,235 | -14,419 | -72,095 | -187,447 | -273,961 | -937,235 | -1,369,805 | -3,561,493 | -17,807,465 |
Here are some more numbers to try:
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