A:
Positive:
1 x 644638855 x 1289277761 x 1056785241 x 267485305 x 211357877 x 735051205 x 534974385 x 14701
Negative:
-1 x -64463885-5 x -12892777-61 x -1056785-241 x -267485-305 x -211357-877 x -73505-1205 x -53497-4385 x -14701
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 64,463,885, 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 | 64,463,885 | |
| -1 | -64,463,885 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 64,463,885.
Example:
1 x 64,463,885 = 64,463,885
and
-1 x -64,463,885 = 64,463,885
Notice both answers equal 64,463,885
With that explanation out of the way, let's continue. Next, we take the number 64,463,885 and divide it by 2:
64,463,885 ÷ 2 = 32,231,942.5
If the quotient is a whole number, then 2 and 32,231,942.5 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 | 64,463,885 | |
| -1 | -64,463,885 |
Now, we try dividing 64,463,885 by 3:
64,463,885 ÷ 3 = 21,487,961.6667
If the quotient is a whole number, then 3 and 21,487,961.6667 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 | 64,463,885 | |
| -1 | -64,463,885 |
Let's try dividing by 4:
64,463,885 ÷ 4 = 16,115,971.25
If the quotient is a whole number, then 4 and 16,115,971.25 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 | 64,463,885 | |
| -1 | 64,463,885 |
If you did it right, you will end up with this table:
| 1 | 5 | 61 | 241 | 305 | 877 | 1,205 | 4,385 | 14,701 | 53,497 | 73,505 | 211,357 | 267,485 | 1,056,785 | 12,892,777 | 64,463,885 |
| -1 | -5 | -61 | -241 | -305 | -877 | -1,205 | -4,385 | -14,701 | -53,497 | -73,505 | -211,357 | -267,485 | -1,056,785 | -12,892,777 | -64,463,885 |
Here are some more numbers to try:
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