A:
Positive:
1 x 8586625155 x 17173250337 x 23207095185 x 4641419241 x 35629151205 x 7125838917 x 9629519259 x 44585
Negative:
-1 x -858662515-5 x -171732503-37 x -23207095-185 x -4641419-241 x -3562915-1205 x -712583-8917 x -96295-19259 x -44585
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 858,662,515, 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 | 858,662,515 | |
| -1 | -858,662,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 858,662,515.
Example:
1 x 858,662,515 = 858,662,515
and
-1 x -858,662,515 = 858,662,515
Notice both answers equal 858,662,515
With that explanation out of the way, let's continue. Next, we take the number 858,662,515 and divide it by 2:
858,662,515 ÷ 2 = 429,331,257.5
If the quotient is a whole number, then 2 and 429,331,257.5 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 | 858,662,515 | |
| -1 | -858,662,515 |
Now, we try dividing 858,662,515 by 3:
858,662,515 ÷ 3 = 286,220,838.3333
If the quotient is a whole number, then 3 and 286,220,838.3333 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 | 858,662,515 | |
| -1 | -858,662,515 |
Let's try dividing by 4:
858,662,515 ÷ 4 = 214,665,628.75
If the quotient is a whole number, then 4 and 214,665,628.75 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 | 858,662,515 | |
| -1 | 858,662,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 185 | 241 | 1,205 | 8,917 | 19,259 | 44,585 | 96,295 | 712,583 | 3,562,915 | 4,641,419 | 23,207,095 | 171,732,503 | 858,662,515 |
| -1 | -5 | -37 | -185 | -241 | -1,205 | -8,917 | -19,259 | -44,585 | -96,295 | -712,583 | -3,562,915 | -4,641,419 | -23,207,095 | -171,732,503 | -858,662,515 |
Here are some more numbers to try:
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