A:
Positive:
1 x 1225425055 x 2450850123 x 5327935115 x 1065587179 x 684595895 x 1369194117 x 297655953 x 20585
Negative:
-1 x -122542505-5 x -24508501-23 x -5327935-115 x -1065587-179 x -684595-895 x -136919-4117 x -29765-5953 x -20585
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 122,542,505, 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 | 122,542,505 | |
| -1 | -122,542,505 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 122,542,505.
Example:
1 x 122,542,505 = 122,542,505
and
-1 x -122,542,505 = 122,542,505
Notice both answers equal 122,542,505
With that explanation out of the way, let's continue. Next, we take the number 122,542,505 and divide it by 2:
122,542,505 ÷ 2 = 61,271,252.5
If the quotient is a whole number, then 2 and 61,271,252.5 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 | 122,542,505 | |
| -1 | -122,542,505 |
Now, we try dividing 122,542,505 by 3:
122,542,505 ÷ 3 = 40,847,501.6667
If the quotient is a whole number, then 3 and 40,847,501.6667 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 | 122,542,505 | |
| -1 | -122,542,505 |
Let's try dividing by 4:
122,542,505 ÷ 4 = 30,635,626.25
If the quotient is a whole number, then 4 and 30,635,626.25 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 | 122,542,505 | |
| -1 | 122,542,505 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 179 | 895 | 4,117 | 5,953 | 20,585 | 29,765 | 136,919 | 684,595 | 1,065,587 | 5,327,935 | 24,508,501 | 122,542,505 |
| -1 | -5 | -23 | -115 | -179 | -895 | -4,117 | -5,953 | -20,585 | -29,765 | -136,919 | -684,595 | -1,065,587 | -5,327,935 | -24,508,501 | -122,542,505 |
Here are some more numbers to try:
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