A:
Positive:
1 x 1225204455 x 2450408917 x 720708585 x 1441417157 x 780385785 x 1560772669 x 459059181 x 13345
Negative:
-1 x -122520445-5 x -24504089-17 x -7207085-85 x -1441417-157 x -780385-785 x -156077-2669 x -45905-9181 x -13345
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 122,520,445, 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 | 122,520,445 | |
| -1 | -122,520,445 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 122,520,445.
Example:
1 x 122,520,445 = 122,520,445
and
-1 x -122,520,445 = 122,520,445
Notice both answers equal 122,520,445
With that explanation out of the way, let's continue. Next, we take the number 122,520,445 and divide it by 2:
122,520,445 ÷ 2 = 61,260,222.5
If the quotient is a whole number, then 2 and 61,260,222.5 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 | 122,520,445 | |
| -1 | -122,520,445 |
Now, we try dividing 122,520,445 by 3:
122,520,445 ÷ 3 = 40,840,148.3333
If the quotient is a whole number, then 3 and 40,840,148.3333 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 | 122,520,445 | |
| -1 | -122,520,445 |
Let's try dividing by 4:
122,520,445 ÷ 4 = 30,630,111.25
If the quotient is a whole number, then 4 and 30,630,111.25 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 | 122,520,445 | |
| -1 | 122,520,445 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 157 | 785 | 2,669 | 9,181 | 13,345 | 45,905 | 156,077 | 780,385 | 1,441,417 | 7,207,085 | 24,504,089 | 122,520,445 |
| -1 | -5 | -17 | -85 | -157 | -785 | -2,669 | -9,181 | -13,345 | -45,905 | -156,077 | -780,385 | -1,441,417 | -7,207,085 | -24,504,089 | -122,520,445 |
Here are some more numbers to try:
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