A:
Positive:
1 x 1246421477 x 1780602117 x 733189119 x 6560113119 x 1047413133 x 937159323 x 3858892261 x 55127
Negative:
-1 x -124642147-7 x -17806021-17 x -7331891-19 x -6560113-119 x -1047413-133 x -937159-323 x -385889-2261 x -55127
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 124,642,147, 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 | 124,642,147 | |
| -1 | -124,642,147 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 124,642,147.
Example:
1 x 124,642,147 = 124,642,147
and
-1 x -124,642,147 = 124,642,147
Notice both answers equal 124,642,147
With that explanation out of the way, let's continue. Next, we take the number 124,642,147 and divide it by 2:
124,642,147 ÷ 2 = 62,321,073.5
If the quotient is a whole number, then 2 and 62,321,073.5 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 | 124,642,147 | |
| -1 | -124,642,147 |
Now, we try dividing 124,642,147 by 3:
124,642,147 ÷ 3 = 41,547,382.3333
If the quotient is a whole number, then 3 and 41,547,382.3333 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 | 124,642,147 | |
| -1 | -124,642,147 |
Let's try dividing by 4:
124,642,147 ÷ 4 = 31,160,536.75
If the quotient is a whole number, then 4 and 31,160,536.75 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 | 124,642,147 | |
| -1 | 124,642,147 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 19 | 119 | 133 | 323 | 2,261 | 55,127 | 385,889 | 937,159 | 1,047,413 | 6,560,113 | 7,331,891 | 17,806,021 | 124,642,147 |
| -1 | -7 | -17 | -19 | -119 | -133 | -323 | -2,261 | -55,127 | -385,889 | -937,159 | -1,047,413 | -6,560,113 | -7,331,891 | -17,806,021 | -124,642,147 |
Here are some more numbers to try:
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