A:
Positive:
1 x 7758580713 x 596813917 x 4563871107 x 725101193 x 401999221 x 351067289 x 2684631391 x 557771819 x 426532509 x 309233281 x 236473757 x 20651
Negative:
-1 x -77585807-13 x -5968139-17 x -4563871-107 x -725101-193 x -401999-221 x -351067-289 x -268463-1391 x -55777-1819 x -42653-2509 x -30923-3281 x -23647-3757 x -20651
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 77,585,807, 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 | 77,585,807 | |
| -1 | -77,585,807 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 77,585,807.
Example:
1 x 77,585,807 = 77,585,807
and
-1 x -77,585,807 = 77,585,807
Notice both answers equal 77,585,807
With that explanation out of the way, let's continue. Next, we take the number 77,585,807 and divide it by 2:
77,585,807 ÷ 2 = 38,792,903.5
If the quotient is a whole number, then 2 and 38,792,903.5 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 | 77,585,807 | |
| -1 | -77,585,807 |
Now, we try dividing 77,585,807 by 3:
77,585,807 ÷ 3 = 25,861,935.6667
If the quotient is a whole number, then 3 and 25,861,935.6667 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 | 77,585,807 | |
| -1 | -77,585,807 |
Let's try dividing by 4:
77,585,807 ÷ 4 = 19,396,451.75
If the quotient is a whole number, then 4 and 19,396,451.75 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 | 77,585,807 | |
| -1 | 77,585,807 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 107 | 193 | 221 | 289 | 1,391 | 1,819 | 2,509 | 3,281 | 3,757 | 20,651 | 23,647 | 30,923 | 42,653 | 55,777 | 268,463 | 351,067 | 401,999 | 725,101 | 4,563,871 | 5,968,139 | 77,585,807 |
| -1 | -13 | -17 | -107 | -193 | -221 | -289 | -1,391 | -1,819 | -2,509 | -3,281 | -3,757 | -20,651 | -23,647 | -30,923 | -42,653 | -55,777 | -268,463 | -351,067 | -401,999 | -725,101 | -4,563,871 | -5,968,139 | -77,585,807 |
Here are some more numbers to try:
Try the factor calculator