A:
Positive:
1 x 4077260155 x 81545203103 x 3958505515 x 791701619 x 6586851279 x 3187853095 x 1317376395 x 63757
Negative:
-1 x -407726015-5 x -81545203-103 x -3958505-515 x -791701-619 x -658685-1279 x -318785-3095 x -131737-6395 x -63757
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 407,726,015, 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 | 407,726,015 | |
| -1 | -407,726,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 407,726,015.
Example:
1 x 407,726,015 = 407,726,015
and
-1 x -407,726,015 = 407,726,015
Notice both answers equal 407,726,015
With that explanation out of the way, let's continue. Next, we take the number 407,726,015 and divide it by 2:
407,726,015 ÷ 2 = 203,863,007.5
If the quotient is a whole number, then 2 and 203,863,007.5 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 | 407,726,015 | |
| -1 | -407,726,015 |
Now, we try dividing 407,726,015 by 3:
407,726,015 ÷ 3 = 135,908,671.6667
If the quotient is a whole number, then 3 and 135,908,671.6667 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 | 407,726,015 | |
| -1 | -407,726,015 |
Let's try dividing by 4:
407,726,015 ÷ 4 = 101,931,503.75
If the quotient is a whole number, then 4 and 101,931,503.75 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 | 407,726,015 | |
| -1 | 407,726,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 103 | 515 | 619 | 1,279 | 3,095 | 6,395 | 63,757 | 131,737 | 318,785 | 658,685 | 791,701 | 3,958,505 | 81,545,203 | 407,726,015 |
| -1 | -5 | -103 | -515 | -619 | -1,279 | -3,095 | -6,395 | -63,757 | -131,737 | -318,785 | -658,685 | -791,701 | -3,958,505 | -81,545,203 | -407,726,015 |
Here are some more numbers to try:
Try the factor calculator