A:
Positive:
1 x 1613414537 x 2304877913 x 1241088131 x 520456391 x 1772983217 x 743509403 x 4003512821 x 57193
Negative:
-1 x -161341453-7 x -23048779-13 x -12410881-31 x -5204563-91 x -1772983-217 x -743509-403 x -400351-2821 x -57193
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 161,341,453, 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 | 161,341,453 | |
| -1 | -161,341,453 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 161,341,453.
Example:
1 x 161,341,453 = 161,341,453
and
-1 x -161,341,453 = 161,341,453
Notice both answers equal 161,341,453
With that explanation out of the way, let's continue. Next, we take the number 161,341,453 and divide it by 2:
161,341,453 ÷ 2 = 80,670,726.5
If the quotient is a whole number, then 2 and 80,670,726.5 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 | 161,341,453 | |
| -1 | -161,341,453 |
Now, we try dividing 161,341,453 by 3:
161,341,453 ÷ 3 = 53,780,484.3333
If the quotient is a whole number, then 3 and 53,780,484.3333 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 | 161,341,453 | |
| -1 | -161,341,453 |
Let's try dividing by 4:
161,341,453 ÷ 4 = 40,335,363.25
If the quotient is a whole number, then 4 and 40,335,363.25 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 | 161,341,453 | |
| -1 | 161,341,453 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 31 | 91 | 217 | 403 | 2,821 | 57,193 | 400,351 | 743,509 | 1,772,983 | 5,204,563 | 12,410,881 | 23,048,779 | 161,341,453 |
| -1 | -7 | -13 | -31 | -91 | -217 | -403 | -2,821 | -57,193 | -400,351 | -743,509 | -1,772,983 | -5,204,563 | -12,410,881 | -23,048,779 | -161,341,453 |
Here are some more numbers to try:
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