A:
Positive:
1 x 1246720097 x 1781028711 x 1133381977 x 1619117233 x 5350731631 x 764392563 x 486436949 x 17941
Negative:
-1 x -124672009-7 x -17810287-11 x -11333819-77 x -1619117-233 x -535073-1631 x -76439-2563 x -48643-6949 x -17941
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 124,672,009, 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 | 124,672,009 | |
| -1 | -124,672,009 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 124,672,009.
Example:
1 x 124,672,009 = 124,672,009
and
-1 x -124,672,009 = 124,672,009
Notice both answers equal 124,672,009
With that explanation out of the way, let's continue. Next, we take the number 124,672,009 and divide it by 2:
124,672,009 ÷ 2 = 62,336,004.5
If the quotient is a whole number, then 2 and 62,336,004.5 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 | 124,672,009 | |
| -1 | -124,672,009 |
Now, we try dividing 124,672,009 by 3:
124,672,009 ÷ 3 = 41,557,336.3333
If the quotient is a whole number, then 3 and 41,557,336.3333 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 | 124,672,009 | |
| -1 | -124,672,009 |
Let's try dividing by 4:
124,672,009 ÷ 4 = 31,168,002.25
If the quotient is a whole number, then 4 and 31,168,002.25 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 | 124,672,009 | |
| -1 | 124,672,009 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 233 | 1,631 | 2,563 | 6,949 | 17,941 | 48,643 | 76,439 | 535,073 | 1,619,117 | 11,333,819 | 17,810,287 | 124,672,009 |
| -1 | -7 | -11 | -77 | -233 | -1,631 | -2,563 | -6,949 | -17,941 | -48,643 | -76,439 | -535,073 | -1,619,117 | -11,333,819 | -17,810,287 | -124,672,009 |
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