A:
Positive:
1 x 850298155 x 1700596313 x 654075547 x 180914565 x 1308151169 x 503135235 x 361829611 x 139165845 x 1006272141 x 397153055 x 278337943 x 10705
Negative:
-1 x -85029815-5 x -17005963-13 x -6540755-47 x -1809145-65 x -1308151-169 x -503135-235 x -361829-611 x -139165-845 x -100627-2141 x -39715-3055 x -27833-7943 x -10705
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 85,029,815, 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 | 85,029,815 | |
| -1 | -85,029,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 85,029,815.
Example:
1 x 85,029,815 = 85,029,815
and
-1 x -85,029,815 = 85,029,815
Notice both answers equal 85,029,815
With that explanation out of the way, let's continue. Next, we take the number 85,029,815 and divide it by 2:
85,029,815 ÷ 2 = 42,514,907.5
If the quotient is a whole number, then 2 and 42,514,907.5 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 | 85,029,815 | |
| -1 | -85,029,815 |
Now, we try dividing 85,029,815 by 3:
85,029,815 ÷ 3 = 28,343,271.6667
If the quotient is a whole number, then 3 and 28,343,271.6667 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 | 85,029,815 | |
| -1 | -85,029,815 |
Let's try dividing by 4:
85,029,815 ÷ 4 = 21,257,453.75
If the quotient is a whole number, then 4 and 21,257,453.75 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 | 85,029,815 | |
| -1 | 85,029,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 47 | 65 | 169 | 235 | 611 | 845 | 2,141 | 3,055 | 7,943 | 10,705 | 27,833 | 39,715 | 100,627 | 139,165 | 361,829 | 503,135 | 1,308,151 | 1,809,145 | 6,540,755 | 17,005,963 | 85,029,815 |
| -1 | -5 | -13 | -47 | -65 | -169 | -235 | -611 | -845 | -2,141 | -3,055 | -7,943 | -10,705 | -27,833 | -39,715 | -100,627 | -139,165 | -361,829 | -503,135 | -1,308,151 | -1,809,145 | -6,540,755 | -17,005,963 | -85,029,815 |
Here are some more numbers to try:
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