A:
Positive:
1 x 2432136077 x 3474480113 x 1870873949 x 496354391 x 2672677173 x 1405859637 x 3818111211 x 2008372207 x 1102012249 x 1081438477 x 2869115449 x 15743
Negative:
-1 x -243213607-7 x -34744801-13 x -18708739-49 x -4963543-91 x -2672677-173 x -1405859-637 x -381811-1211 x -200837-2207 x -110201-2249 x -108143-8477 x -28691-15449 x -15743
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 243,213,607, 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 | 243,213,607 | |
| -1 | -243,213,607 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,213,607.
Example:
1 x 243,213,607 = 243,213,607
and
-1 x -243,213,607 = 243,213,607
Notice both answers equal 243,213,607
With that explanation out of the way, let's continue. Next, we take the number 243,213,607 and divide it by 2:
243,213,607 ÷ 2 = 121,606,803.5
If the quotient is a whole number, then 2 and 121,606,803.5 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 | 243,213,607 | |
| -1 | -243,213,607 |
Now, we try dividing 243,213,607 by 3:
243,213,607 ÷ 3 = 81,071,202.3333
If the quotient is a whole number, then 3 and 81,071,202.3333 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 | 243,213,607 | |
| -1 | -243,213,607 |
Let's try dividing by 4:
243,213,607 ÷ 4 = 60,803,401.75
If the quotient is a whole number, then 4 and 60,803,401.75 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 | 243,213,607 | |
| -1 | 243,213,607 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 49 | 91 | 173 | 637 | 1,211 | 2,207 | 2,249 | 8,477 | 15,449 | 15,743 | 28,691 | 108,143 | 110,201 | 200,837 | 381,811 | 1,405,859 | 2,672,677 | 4,963,543 | 18,708,739 | 34,744,801 | 243,213,607 |
| -1 | -7 | -13 | -49 | -91 | -173 | -637 | -1,211 | -2,207 | -2,249 | -8,477 | -15,449 | -15,743 | -28,691 | -108,143 | -110,201 | -200,837 | -381,811 | -1,405,859 | -2,672,677 | -4,963,543 | -18,708,739 | -34,744,801 | -243,213,607 |
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