A:
Positive:
1 x 4036055655 x 8072111311 x 3669141555 x 7338283181 x 2229865905 x 4459731991 x 2027159955 x 40543
Negative:
-1 x -403605565-5 x -80721113-11 x -36691415-55 x -7338283-181 x -2229865-905 x -445973-1991 x -202715-9955 x -40543
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 403,605,565, 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 | 403,605,565 | |
| -1 | -403,605,565 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 403,605,565.
Example:
1 x 403,605,565 = 403,605,565
and
-1 x -403,605,565 = 403,605,565
Notice both answers equal 403,605,565
With that explanation out of the way, let's continue. Next, we take the number 403,605,565 and divide it by 2:
403,605,565 ÷ 2 = 201,802,782.5
If the quotient is a whole number, then 2 and 201,802,782.5 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 | 403,605,565 | |
| -1 | -403,605,565 |
Now, we try dividing 403,605,565 by 3:
403,605,565 ÷ 3 = 134,535,188.3333
If the quotient is a whole number, then 3 and 134,535,188.3333 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 | 403,605,565 | |
| -1 | -403,605,565 |
Let's try dividing by 4:
403,605,565 ÷ 4 = 100,901,391.25
If the quotient is a whole number, then 4 and 100,901,391.25 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 | 403,605,565 | |
| -1 | 403,605,565 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 181 | 905 | 1,991 | 9,955 | 40,543 | 202,715 | 445,973 | 2,229,865 | 7,338,283 | 36,691,415 | 80,721,113 | 403,605,565 |
| -1 | -5 | -11 | -55 | -181 | -905 | -1,991 | -9,955 | -40,543 | -202,715 | -445,973 | -2,229,865 | -7,338,283 | -36,691,415 | -80,721,113 | -403,605,565 |
Here are some more numbers to try:
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