A:
Positive:
1 x 8506578729 x 293330359 x 144179383 x 1024889599 x 1420131711 x 497172407 x 353414897 x 17371
Negative:
-1 x -85065787-29 x -2933303-59 x -1441793-83 x -1024889-599 x -142013-1711 x -49717-2407 x -35341-4897 x -17371
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 85,065,787, 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 | 85,065,787 | |
| -1 | -85,065,787 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 85,065,787.
Example:
1 x 85,065,787 = 85,065,787
and
-1 x -85,065,787 = 85,065,787
Notice both answers equal 85,065,787
With that explanation out of the way, let's continue. Next, we take the number 85,065,787 and divide it by 2:
85,065,787 ÷ 2 = 42,532,893.5
If the quotient is a whole number, then 2 and 42,532,893.5 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 | 85,065,787 | |
| -1 | -85,065,787 |
Now, we try dividing 85,065,787 by 3:
85,065,787 ÷ 3 = 28,355,262.3333
If the quotient is a whole number, then 3 and 28,355,262.3333 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 | 85,065,787 | |
| -1 | -85,065,787 |
Let's try dividing by 4:
85,065,787 ÷ 4 = 21,266,446.75
If the quotient is a whole number, then 4 and 21,266,446.75 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 | 85,065,787 | |
| -1 | 85,065,787 |
If you did it right, you will end up with this table:
| 1 | 29 | 59 | 83 | 599 | 1,711 | 2,407 | 4,897 | 17,371 | 35,341 | 49,717 | 142,013 | 1,024,889 | 1,441,793 | 2,933,303 | 85,065,787 |
| -1 | -29 | -59 | -83 | -599 | -1,711 | -2,407 | -4,897 | -17,371 | -35,341 | -49,717 | -142,013 | -1,024,889 | -1,441,793 | -2,933,303 | -85,065,787 |
Here are some more numbers to try:
Try the factor calculator