A:
Positive:
1 x 66563134313 x 5120241147 x 14162369169 x 3938647611 x 10894131783 x 3733212209 x 3013277943 x 8380123179 x 28717
Negative:
-1 x -665631343-13 x -51202411-47 x -14162369-169 x -3938647-611 x -1089413-1783 x -373321-2209 x -301327-7943 x -83801-23179 x -28717
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 665,631,343, 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 | 665,631,343 | |
| -1 | -665,631,343 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 665,631,343.
Example:
1 x 665,631,343 = 665,631,343
and
-1 x -665,631,343 = 665,631,343
Notice both answers equal 665,631,343
With that explanation out of the way, let's continue. Next, we take the number 665,631,343 and divide it by 2:
665,631,343 ÷ 2 = 332,815,671.5
If the quotient is a whole number, then 2 and 332,815,671.5 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 | 665,631,343 | |
| -1 | -665,631,343 |
Now, we try dividing 665,631,343 by 3:
665,631,343 ÷ 3 = 221,877,114.3333
If the quotient is a whole number, then 3 and 221,877,114.3333 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 | 665,631,343 | |
| -1 | -665,631,343 |
Let's try dividing by 4:
665,631,343 ÷ 4 = 166,407,835.75
If the quotient is a whole number, then 4 and 166,407,835.75 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 | 665,631,343 | |
| -1 | 665,631,343 |
If you did it right, you will end up with this table:
| 1 | 13 | 47 | 169 | 611 | 1,783 | 2,209 | 7,943 | 23,179 | 28,717 | 83,801 | 301,327 | 373,321 | 1,089,413 | 3,938,647 | 14,162,369 | 51,202,411 | 665,631,343 |
| -1 | -13 | -47 | -169 | -611 | -1,783 | -2,209 | -7,943 | -23,179 | -28,717 | -83,801 | -301,327 | -373,321 | -1,089,413 | -3,938,647 | -14,162,369 | -51,202,411 | -665,631,343 |
Here are some more numbers to try:
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