A:
Positive:
1 x 1133212155 x 226642437 x 1618874535 x 3237749509 x 2226352545 x 445273563 x 318056361 x 17815
Negative:
-1 x -113321215-5 x -22664243-7 x -16188745-35 x -3237749-509 x -222635-2545 x -44527-3563 x -31805-6361 x -17815
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 113,321,215, 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 | 113,321,215 | |
| -1 | -113,321,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 113,321,215.
Example:
1 x 113,321,215 = 113,321,215
and
-1 x -113,321,215 = 113,321,215
Notice both answers equal 113,321,215
With that explanation out of the way, let's continue. Next, we take the number 113,321,215 and divide it by 2:
113,321,215 ÷ 2 = 56,660,607.5
If the quotient is a whole number, then 2 and 56,660,607.5 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 | 113,321,215 | |
| -1 | -113,321,215 |
Now, we try dividing 113,321,215 by 3:
113,321,215 ÷ 3 = 37,773,738.3333
If the quotient is a whole number, then 3 and 37,773,738.3333 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 | 113,321,215 | |
| -1 | -113,321,215 |
Let's try dividing by 4:
113,321,215 ÷ 4 = 28,330,303.75
If the quotient is a whole number, then 4 and 28,330,303.75 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 | 113,321,215 | |
| -1 | 113,321,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 509 | 2,545 | 3,563 | 6,361 | 17,815 | 31,805 | 44,527 | 222,635 | 3,237,749 | 16,188,745 | 22,664,243 | 113,321,215 |
| -1 | -5 | -7 | -35 | -509 | -2,545 | -3,563 | -6,361 | -17,815 | -31,805 | -44,527 | -222,635 | -3,237,749 | -16,188,745 | -22,664,243 | -113,321,215 |
Here are some more numbers to try:
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