A:
Positive:
1 x 6113062155 x 12226124313 x 4702355565 x 9404711313 x 19530551565 x 3906114069 x 15023520345 x 30047
Negative:
-1 x -611306215-5 x -122261243-13 x -47023555-65 x -9404711-313 x -1953055-1565 x -390611-4069 x -150235-20345 x -30047
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 611,306,215, 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 | 611,306,215 | |
| -1 | -611,306,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 611,306,215.
Example:
1 x 611,306,215 = 611,306,215
and
-1 x -611,306,215 = 611,306,215
Notice both answers equal 611,306,215
With that explanation out of the way, let's continue. Next, we take the number 611,306,215 and divide it by 2:
611,306,215 ÷ 2 = 305,653,107.5
If the quotient is a whole number, then 2 and 305,653,107.5 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 | 611,306,215 | |
| -1 | -611,306,215 |
Now, we try dividing 611,306,215 by 3:
611,306,215 ÷ 3 = 203,768,738.3333
If the quotient is a whole number, then 3 and 203,768,738.3333 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 | 611,306,215 | |
| -1 | -611,306,215 |
Let's try dividing by 4:
611,306,215 ÷ 4 = 152,826,553.75
If the quotient is a whole number, then 4 and 152,826,553.75 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 | 611,306,215 | |
| -1 | 611,306,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 313 | 1,565 | 4,069 | 20,345 | 30,047 | 150,235 | 390,611 | 1,953,055 | 9,404,711 | 47,023,555 | 122,261,243 | 611,306,215 |
| -1 | -5 | -13 | -65 | -313 | -1,565 | -4,069 | -20,345 | -30,047 | -150,235 | -390,611 | -1,953,055 | -9,404,711 | -47,023,555 | -122,261,243 | -611,306,215 |
Here are some more numbers to try:
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