A:
Positive:
1 x 6646555141 x 162111153 x 125406773 x 910487419 x 1586292173 x 305872993 x 222073869 x 17179
Negative:
-1 x -66465551-41 x -1621111-53 x -1254067-73 x -910487-419 x -158629-2173 x -30587-2993 x -22207-3869 x -17179
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 66,465,551, 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 | 66,465,551 | |
| -1 | -66,465,551 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 66,465,551.
Example:
1 x 66,465,551 = 66,465,551
and
-1 x -66,465,551 = 66,465,551
Notice both answers equal 66,465,551
With that explanation out of the way, let's continue. Next, we take the number 66,465,551 and divide it by 2:
66,465,551 ÷ 2 = 33,232,775.5
If the quotient is a whole number, then 2 and 33,232,775.5 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 | 66,465,551 | |
| -1 | -66,465,551 |
Now, we try dividing 66,465,551 by 3:
66,465,551 ÷ 3 = 22,155,183.6667
If the quotient is a whole number, then 3 and 22,155,183.6667 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 | 66,465,551 | |
| -1 | -66,465,551 |
Let's try dividing by 4:
66,465,551 ÷ 4 = 16,616,387.75
If the quotient is a whole number, then 4 and 16,616,387.75 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 | 66,465,551 | |
| -1 | 66,465,551 |
If you did it right, you will end up with this table:
| 1 | 41 | 53 | 73 | 419 | 2,173 | 2,993 | 3,869 | 17,179 | 22,207 | 30,587 | 158,629 | 910,487 | 1,254,067 | 1,621,111 | 66,465,551 |
| -1 | -41 | -53 | -73 | -419 | -2,173 | -2,993 | -3,869 | -17,179 | -22,207 | -30,587 | -158,629 | -910,487 | -1,254,067 | -1,621,111 | -66,465,551 |
Here are some more numbers to try:
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