A:
Positive:
1 x 6205146355 x 12410292713 x 4773189519 x 3265866565 x 954637995 x 6531733247 x 25122051235 x 502441
Negative:
-1 x -620514635-5 x -124102927-13 x -47731895-19 x -32658665-65 x -9546379-95 x -6531733-247 x -2512205-1235 x -502441
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 620,514,635, 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 | 620,514,635 | |
| -1 | -620,514,635 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 620,514,635.
Example:
1 x 620,514,635 = 620,514,635
and
-1 x -620,514,635 = 620,514,635
Notice both answers equal 620,514,635
With that explanation out of the way, let's continue. Next, we take the number 620,514,635 and divide it by 2:
620,514,635 ÷ 2 = 310,257,317.5
If the quotient is a whole number, then 2 and 310,257,317.5 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 | 620,514,635 | |
| -1 | -620,514,635 |
Now, we try dividing 620,514,635 by 3:
620,514,635 ÷ 3 = 206,838,211.6667
If the quotient is a whole number, then 3 and 206,838,211.6667 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 | 620,514,635 | |
| -1 | -620,514,635 |
Let's try dividing by 4:
620,514,635 ÷ 4 = 155,128,658.75
If the quotient is a whole number, then 4 and 155,128,658.75 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 | 620,514,635 | |
| -1 | 620,514,635 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 19 | 65 | 95 | 247 | 1,235 | 502,441 | 2,512,205 | 6,531,733 | 9,546,379 | 32,658,665 | 47,731,895 | 124,102,927 | 620,514,635 |
| -1 | -5 | -13 | -19 | -65 | -95 | -247 | -1,235 | -502,441 | -2,512,205 | -6,531,733 | -9,546,379 | -32,658,665 | -47,731,895 | -124,102,927 | -620,514,635 |
Here are some more numbers to try:
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