A:
Positive:
1 x 15022155 x 30044311 x 13656513 x 11555555 x 2731365 x 23111121 x 12415143 x 10505191 x 7865605 x 2483715 x 2101955 x 1573
Negative:
-1 x -1502215-5 x -300443-11 x -136565-13 x -115555-55 x -27313-65 x -23111-121 x -12415-143 x -10505-191 x -7865-605 x -2483-715 x -2101-955 x -1573
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 1,502,215, 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 | 1,502,215 | |
| -1 | -1,502,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,502,215.
Example:
1 x 1,502,215 = 1,502,215
and
-1 x -1,502,215 = 1,502,215
Notice both answers equal 1,502,215
With that explanation out of the way, let's continue. Next, we take the number 1,502,215 and divide it by 2:
1,502,215 ÷ 2 = 751,107.5
If the quotient is a whole number, then 2 and 751,107.5 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 | 1,502,215 | |
| -1 | -1,502,215 |
Now, we try dividing 1,502,215 by 3:
1,502,215 ÷ 3 = 500,738.3333
If the quotient is a whole number, then 3 and 500,738.3333 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 | 1,502,215 | |
| -1 | -1,502,215 |
Let's try dividing by 4:
1,502,215 ÷ 4 = 375,553.75
If the quotient is a whole number, then 4 and 375,553.75 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 | 1,502,215 | |
| -1 | 1,502,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 121 | 143 | 191 | 605 | 715 | 955 | 1,573 | 2,101 | 2,483 | 7,865 | 10,505 | 12,415 | 23,111 | 27,313 | 115,555 | 136,565 | 300,443 | 1,502,215 |
| -1 | -5 | -11 | -13 | -55 | -65 | -121 | -143 | -191 | -605 | -715 | -955 | -1,573 | -2,101 | -2,483 | -7,865 | -10,505 | -12,415 | -23,111 | -27,313 | -115,555 | -136,565 | -300,443 | -1,502,215 |
Here are some more numbers to try:
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