A:
Positive:
1 x 1244031113 x 95694717 x 731783181 x 68731221 x 56291311 x 400012353 x 52873077 x 4043
Negative:
-1 x -12440311-13 x -956947-17 x -731783-181 x -68731-221 x -56291-311 x -40001-2353 x -5287-3077 x -4043
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 12,440,311, 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 | 12,440,311 | |
| -1 | -12,440,311 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,440,311.
Example:
1 x 12,440,311 = 12,440,311
and
-1 x -12,440,311 = 12,440,311
Notice both answers equal 12,440,311
With that explanation out of the way, let's continue. Next, we take the number 12,440,311 and divide it by 2:
12,440,311 ÷ 2 = 6,220,155.5
If the quotient is a whole number, then 2 and 6,220,155.5 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 | 12,440,311 | |
| -1 | -12,440,311 |
Now, we try dividing 12,440,311 by 3:
12,440,311 ÷ 3 = 4,146,770.3333
If the quotient is a whole number, then 3 and 4,146,770.3333 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 | 12,440,311 | |
| -1 | -12,440,311 |
Let's try dividing by 4:
12,440,311 ÷ 4 = 3,110,077.75
If the quotient is a whole number, then 4 and 3,110,077.75 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 | 12,440,311 | |
| -1 | 12,440,311 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 181 | 221 | 311 | 2,353 | 3,077 | 4,043 | 5,287 | 40,001 | 56,291 | 68,731 | 731,783 | 956,947 | 12,440,311 |
| -1 | -13 | -17 | -181 | -221 | -311 | -2,353 | -3,077 | -4,043 | -5,287 | -40,001 | -56,291 | -68,731 | -731,783 | -956,947 | -12,440,311 |
Here are some more numbers to try:
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