A:
Positive:
1 x 2312101155 x 4624202317 x 1360059553 x 436245585 x 2720119265 x 872491289 x 800035901 x 2566151445 x 1600073019 x 765854505 x 5132315095 x 15317
Negative:
-1 x -231210115-5 x -46242023-17 x -13600595-53 x -4362455-85 x -2720119-265 x -872491-289 x -800035-901 x -256615-1445 x -160007-3019 x -76585-4505 x -51323-15095 x -15317
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 231,210,115, 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 | 231,210,115 | |
| -1 | -231,210,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 231,210,115.
Example:
1 x 231,210,115 = 231,210,115
and
-1 x -231,210,115 = 231,210,115
Notice both answers equal 231,210,115
With that explanation out of the way, let's continue. Next, we take the number 231,210,115 and divide it by 2:
231,210,115 ÷ 2 = 115,605,057.5
If the quotient is a whole number, then 2 and 115,605,057.5 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 | 231,210,115 | |
| -1 | -231,210,115 |
Now, we try dividing 231,210,115 by 3:
231,210,115 ÷ 3 = 77,070,038.3333
If the quotient is a whole number, then 3 and 77,070,038.3333 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 | 231,210,115 | |
| -1 | -231,210,115 |
Let's try dividing by 4:
231,210,115 ÷ 4 = 57,802,528.75
If the quotient is a whole number, then 4 and 57,802,528.75 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 | 231,210,115 | |
| -1 | 231,210,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 53 | 85 | 265 | 289 | 901 | 1,445 | 3,019 | 4,505 | 15,095 | 15,317 | 51,323 | 76,585 | 160,007 | 256,615 | 800,035 | 872,491 | 2,720,119 | 4,362,455 | 13,600,595 | 46,242,023 | 231,210,115 |
| -1 | -5 | -17 | -53 | -85 | -265 | -289 | -901 | -1,445 | -3,019 | -4,505 | -15,095 | -15,317 | -51,323 | -76,585 | -160,007 | -256,615 | -800,035 | -872,491 | -2,720,119 | -4,362,455 | -13,600,595 | -46,242,023 | -231,210,115 |
Here are some more numbers to try:
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