A:
Positive:
1 x 858369055 x 171673817 x 1226241511 x 780335535 x 245248355 x 156067177 x 1114765385 x 222953
Negative:
-1 x -85836905-5 x -17167381-7 x -12262415-11 x -7803355-35 x -2452483-55 x -1560671-77 x -1114765-385 x -222953
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 85,836,905, 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 | 85,836,905 | |
| -1 | -85,836,905 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 85,836,905.
Example:
1 x 85,836,905 = 85,836,905
and
-1 x -85,836,905 = 85,836,905
Notice both answers equal 85,836,905
With that explanation out of the way, let's continue. Next, we take the number 85,836,905 and divide it by 2:
85,836,905 ÷ 2 = 42,918,452.5
If the quotient is a whole number, then 2 and 42,918,452.5 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 | 85,836,905 | |
| -1 | -85,836,905 |
Now, we try dividing 85,836,905 by 3:
85,836,905 ÷ 3 = 28,612,301.6667
If the quotient is a whole number, then 3 and 28,612,301.6667 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 | 85,836,905 | |
| -1 | -85,836,905 |
Let's try dividing by 4:
85,836,905 ÷ 4 = 21,459,226.25
If the quotient is a whole number, then 4 and 21,459,226.25 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 | 85,836,905 | |
| -1 | 85,836,905 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 222,953 | 1,114,765 | 1,560,671 | 2,452,483 | 7,803,355 | 12,262,415 | 17,167,381 | 85,836,905 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -222,953 | -1,114,765 | -1,560,671 | -2,452,483 | -7,803,355 | -12,262,415 | -17,167,381 | -85,836,905 |
Here are some more numbers to try:
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