A:
Positive:
1 x 4020364555 x 8040729143 x 9349685215 x 1869937307 x 13095651535 x 2619136091 x 6600513201 x 30455
Negative:
-1 x -402036455-5 x -80407291-43 x -9349685-215 x -1869937-307 x -1309565-1535 x -261913-6091 x -66005-13201 x -30455
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 402,036,455, 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 | 402,036,455 | |
| -1 | -402,036,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 402,036,455.
Example:
1 x 402,036,455 = 402,036,455
and
-1 x -402,036,455 = 402,036,455
Notice both answers equal 402,036,455
With that explanation out of the way, let's continue. Next, we take the number 402,036,455 and divide it by 2:
402,036,455 ÷ 2 = 201,018,227.5
If the quotient is a whole number, then 2 and 201,018,227.5 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 | 402,036,455 | |
| -1 | -402,036,455 |
Now, we try dividing 402,036,455 by 3:
402,036,455 ÷ 3 = 134,012,151.6667
If the quotient is a whole number, then 3 and 134,012,151.6667 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 | 402,036,455 | |
| -1 | -402,036,455 |
Let's try dividing by 4:
402,036,455 ÷ 4 = 100,509,113.75
If the quotient is a whole number, then 4 and 100,509,113.75 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 | 402,036,455 | |
| -1 | 402,036,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 215 | 307 | 1,535 | 6,091 | 13,201 | 30,455 | 66,005 | 261,913 | 1,309,565 | 1,869,937 | 9,349,685 | 80,407,291 | 402,036,455 |
| -1 | -5 | -43 | -215 | -307 | -1,535 | -6,091 | -13,201 | -30,455 | -66,005 | -261,913 | -1,309,565 | -1,869,937 | -9,349,685 | -80,407,291 | -402,036,455 |
Here are some more numbers to try:
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