A:
Positive:
1 x 850408517 x 1214869317 x 5002403119 x 714629127 x 669613289 x 294259331 x 256921889 x 956592023 x 420372159 x 393892317 x 367035627 x 15113
Negative:
-1 x -85040851-7 x -12148693-17 x -5002403-119 x -714629-127 x -669613-289 x -294259-331 x -256921-889 x -95659-2023 x -42037-2159 x -39389-2317 x -36703-5627 x -15113
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 85,040,851, 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 | 85,040,851 | |
| -1 | -85,040,851 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 85,040,851.
Example:
1 x 85,040,851 = 85,040,851
and
-1 x -85,040,851 = 85,040,851
Notice both answers equal 85,040,851
With that explanation out of the way, let's continue. Next, we take the number 85,040,851 and divide it by 2:
85,040,851 ÷ 2 = 42,520,425.5
If the quotient is a whole number, then 2 and 42,520,425.5 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 | 85,040,851 | |
| -1 | -85,040,851 |
Now, we try dividing 85,040,851 by 3:
85,040,851 ÷ 3 = 28,346,950.3333
If the quotient is a whole number, then 3 and 28,346,950.3333 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 | 85,040,851 | |
| -1 | -85,040,851 |
Let's try dividing by 4:
85,040,851 ÷ 4 = 21,260,212.75
If the quotient is a whole number, then 4 and 21,260,212.75 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 | 85,040,851 | |
| -1 | 85,040,851 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 127 | 289 | 331 | 889 | 2,023 | 2,159 | 2,317 | 5,627 | 15,113 | 36,703 | 39,389 | 42,037 | 95,659 | 256,921 | 294,259 | 669,613 | 714,629 | 5,002,403 | 12,148,693 | 85,040,851 |
| -1 | -7 | -17 | -119 | -127 | -289 | -331 | -889 | -2,023 | -2,159 | -2,317 | -5,627 | -15,113 | -36,703 | -39,389 | -42,037 | -95,659 | -256,921 | -294,259 | -669,613 | -714,629 | -5,002,403 | -12,148,693 | -85,040,851 |
Here are some more numbers to try:
Try the factor calculator