A:
Positive:
1 x 1613110037 x 2304442947 x 3432149113 x 1427531329 x 490307791 x 2039334339 x 371775311 x 30373
Negative:
-1 x -161311003-7 x -23044429-47 x -3432149-113 x -1427531-329 x -490307-791 x -203933-4339 x -37177-5311 x -30373
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 161,311,003, 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 | 161,311,003 | |
| -1 | -161,311,003 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 161,311,003.
Example:
1 x 161,311,003 = 161,311,003
and
-1 x -161,311,003 = 161,311,003
Notice both answers equal 161,311,003
With that explanation out of the way, let's continue. Next, we take the number 161,311,003 and divide it by 2:
161,311,003 ÷ 2 = 80,655,501.5
If the quotient is a whole number, then 2 and 80,655,501.5 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 | 161,311,003 | |
| -1 | -161,311,003 |
Now, we try dividing 161,311,003 by 3:
161,311,003 ÷ 3 = 53,770,334.3333
If the quotient is a whole number, then 3 and 53,770,334.3333 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 | 161,311,003 | |
| -1 | -161,311,003 |
Let's try dividing by 4:
161,311,003 ÷ 4 = 40,327,750.75
If the quotient is a whole number, then 4 and 40,327,750.75 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 | 161,311,003 | |
| -1 | 161,311,003 |
If you did it right, you will end up with this table:
| 1 | 7 | 47 | 113 | 329 | 791 | 4,339 | 5,311 | 30,373 | 37,177 | 203,933 | 490,307 | 1,427,531 | 3,432,149 | 23,044,429 | 161,311,003 |
| -1 | -7 | -47 | -113 | -329 | -791 | -4,339 | -5,311 | -30,373 | -37,177 | -203,933 | -490,307 | -1,427,531 | -3,432,149 | -23,044,429 | -161,311,003 |
Here are some more numbers to try:
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