A:
Positive:
1 x 19680055 x 39360113 x 15138517 x 11576565 x 3027785 x 23153137 x 14365169 x 11645221 x 8905685 x 2873845 x 23291105 x 1781
Negative:
-1 x -1968005-5 x -393601-13 x -151385-17 x -115765-65 x -30277-85 x -23153-137 x -14365-169 x -11645-221 x -8905-685 x -2873-845 x -2329-1105 x -1781
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 1,968,005, 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 | 1,968,005 | |
| -1 | -1,968,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,968,005.
Example:
1 x 1,968,005 = 1,968,005
and
-1 x -1,968,005 = 1,968,005
Notice both answers equal 1,968,005
With that explanation out of the way, let's continue. Next, we take the number 1,968,005 and divide it by 2:
1,968,005 ÷ 2 = 984,002.5
If the quotient is a whole number, then 2 and 984,002.5 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 | 1,968,005 | |
| -1 | -1,968,005 |
Now, we try dividing 1,968,005 by 3:
1,968,005 ÷ 3 = 656,001.6667
If the quotient is a whole number, then 3 and 656,001.6667 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 | 1,968,005 | |
| -1 | -1,968,005 |
Let's try dividing by 4:
1,968,005 ÷ 4 = 492,001.25
If the quotient is a whole number, then 4 and 492,001.25 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 | 1,968,005 | |
| -1 | 1,968,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 17 | 65 | 85 | 137 | 169 | 221 | 685 | 845 | 1,105 | 1,781 | 2,329 | 2,873 | 8,905 | 11,645 | 14,365 | 23,153 | 30,277 | 115,765 | 151,385 | 393,601 | 1,968,005 |
| -1 | -5 | -13 | -17 | -65 | -85 | -137 | -169 | -221 | -685 | -845 | -1,105 | -1,781 | -2,329 | -2,873 | -8,905 | -11,645 | -14,365 | -23,153 | -30,277 | -115,765 | -151,385 | -393,601 | -1,968,005 |
Here are some more numbers to try:
Try the factor calculator