A:
Positive:
1 x 1214746155 x 2429492323 x 5281505115 x 1056301839 x 1447851259 x 964854195 x 289576295 x 19297
Negative:
-1 x -121474615-5 x -24294923-23 x -5281505-115 x -1056301-839 x -144785-1259 x -96485-4195 x -28957-6295 x -19297
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 121,474,615, 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 | 121,474,615 | |
| -1 | -121,474,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,474,615.
Example:
1 x 121,474,615 = 121,474,615
and
-1 x -121,474,615 = 121,474,615
Notice both answers equal 121,474,615
With that explanation out of the way, let's continue. Next, we take the number 121,474,615 and divide it by 2:
121,474,615 ÷ 2 = 60,737,307.5
If the quotient is a whole number, then 2 and 60,737,307.5 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 | 121,474,615 | |
| -1 | -121,474,615 |
Now, we try dividing 121,474,615 by 3:
121,474,615 ÷ 3 = 40,491,538.3333
If the quotient is a whole number, then 3 and 40,491,538.3333 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 | 121,474,615 | |
| -1 | -121,474,615 |
Let's try dividing by 4:
121,474,615 ÷ 4 = 30,368,653.75
If the quotient is a whole number, then 4 and 30,368,653.75 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 | 121,474,615 | |
| -1 | 121,474,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 839 | 1,259 | 4,195 | 6,295 | 19,297 | 28,957 | 96,485 | 144,785 | 1,056,301 | 5,281,505 | 24,294,923 | 121,474,615 |
| -1 | -5 | -23 | -115 | -839 | -1,259 | -4,195 | -6,295 | -19,297 | -28,957 | -96,485 | -144,785 | -1,056,301 | -5,281,505 | -24,294,923 | -121,474,615 |
Here are some more numbers to try:
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