A:
Positive:
1 x 6410561311 x 582778313 x 493120131 x 2067923143 x 448291341 x 187993403 x 1590714433 x 14461
Negative:
-1 x -64105613-11 x -5827783-13 x -4931201-31 x -2067923-143 x -448291-341 x -187993-403 x -159071-4433 x -14461
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 64,105,613, 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 | 64,105,613 | |
| -1 | -64,105,613 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,105,613.
Example:
1 x 64,105,613 = 64,105,613
and
-1 x -64,105,613 = 64,105,613
Notice both answers equal 64,105,613
With that explanation out of the way, let's continue. Next, we take the number 64,105,613 and divide it by 2:
64,105,613 ÷ 2 = 32,052,806.5
If the quotient is a whole number, then 2 and 32,052,806.5 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 | 64,105,613 | |
| -1 | -64,105,613 |
Now, we try dividing 64,105,613 by 3:
64,105,613 ÷ 3 = 21,368,537.6667
If the quotient is a whole number, then 3 and 21,368,537.6667 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 | 64,105,613 | |
| -1 | -64,105,613 |
Let's try dividing by 4:
64,105,613 ÷ 4 = 16,026,403.25
If the quotient is a whole number, then 4 and 16,026,403.25 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 | 64,105,613 | |
| -1 | 64,105,613 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 31 | 143 | 341 | 403 | 4,433 | 14,461 | 159,071 | 187,993 | 448,291 | 2,067,923 | 4,931,201 | 5,827,783 | 64,105,613 |
| -1 | -11 | -13 | -31 | -143 | -341 | -403 | -4,433 | -14,461 | -159,071 | -187,993 | -448,291 | -2,067,923 | -4,931,201 | -5,827,783 | -64,105,613 |
Here are some more numbers to try:
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