A:
Positive:
1 x 15551155 x 31102331 x 5016579 x 19685127 x 12245155 x 10033395 x 3937635 x 2449
Negative:
-1 x -1555115-5 x -311023-31 x -50165-79 x -19685-127 x -12245-155 x -10033-395 x -3937-635 x -2449
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 1,555,115, 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 | 1,555,115 | |
| -1 | -1,555,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,555,115.
Example:
1 x 1,555,115 = 1,555,115
and
-1 x -1,555,115 = 1,555,115
Notice both answers equal 1,555,115
With that explanation out of the way, let's continue. Next, we take the number 1,555,115 and divide it by 2:
1,555,115 ÷ 2 = 777,557.5
If the quotient is a whole number, then 2 and 777,557.5 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 | 1,555,115 | |
| -1 | -1,555,115 |
Now, we try dividing 1,555,115 by 3:
1,555,115 ÷ 3 = 518,371.6667
If the quotient is a whole number, then 3 and 518,371.6667 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 | 1,555,115 | |
| -1 | -1,555,115 |
Let's try dividing by 4:
1,555,115 ÷ 4 = 388,778.75
If the quotient is a whole number, then 4 and 388,778.75 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 | 1,555,115 | |
| -1 | 1,555,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 79 | 127 | 155 | 395 | 635 | 2,449 | 3,937 | 10,033 | 12,245 | 19,685 | 50,165 | 311,023 | 1,555,115 |
| -1 | -5 | -31 | -79 | -127 | -155 | -395 | -635 | -2,449 | -3,937 | -10,033 | -12,245 | -19,685 | -50,165 | -311,023 | -1,555,115 |
Here are some more numbers to try:
Try the factor calculator