A:
Positive:
1 x 6647453337 x 9496361923 x 28901971161 x 41288531523 x 4364712711 x 24520310661 x 6235318977 x 35029
Negative:
-1 x -664745333-7 x -94963619-23 x -28901971-161 x -4128853-1523 x -436471-2711 x -245203-10661 x -62353-18977 x -35029
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 664,745,333, 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 | 664,745,333 | |
| -1 | -664,745,333 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 664,745,333.
Example:
1 x 664,745,333 = 664,745,333
and
-1 x -664,745,333 = 664,745,333
Notice both answers equal 664,745,333
With that explanation out of the way, let's continue. Next, we take the number 664,745,333 and divide it by 2:
664,745,333 ÷ 2 = 332,372,666.5
If the quotient is a whole number, then 2 and 332,372,666.5 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 | 664,745,333 | |
| -1 | -664,745,333 |
Now, we try dividing 664,745,333 by 3:
664,745,333 ÷ 3 = 221,581,777.6667
If the quotient is a whole number, then 3 and 221,581,777.6667 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 | 664,745,333 | |
| -1 | -664,745,333 |
Let's try dividing by 4:
664,745,333 ÷ 4 = 166,186,333.25
If the quotient is a whole number, then 4 and 166,186,333.25 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 | 664,745,333 | |
| -1 | 664,745,333 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 1,523 | 2,711 | 10,661 | 18,977 | 35,029 | 62,353 | 245,203 | 436,471 | 4,128,853 | 28,901,971 | 94,963,619 | 664,745,333 |
| -1 | -7 | -23 | -161 | -1,523 | -2,711 | -10,661 | -18,977 | -35,029 | -62,353 | -245,203 | -436,471 | -4,128,853 | -28,901,971 | -94,963,619 | -664,745,333 |
Here are some more numbers to try:
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