A:
Positive:
1 x 6161205555 x 12322411143 x 14328385215 x 2865677541 x 11388552705 x 2277715297 x 11631523263 x 26485
Negative:
-1 x -616120555-5 x -123224111-43 x -14328385-215 x -2865677-541 x -1138855-2705 x -227771-5297 x -116315-23263 x -26485
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 616,120,555, 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 | 616,120,555 | |
| -1 | -616,120,555 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 616,120,555.
Example:
1 x 616,120,555 = 616,120,555
and
-1 x -616,120,555 = 616,120,555
Notice both answers equal 616,120,555
With that explanation out of the way, let's continue. Next, we take the number 616,120,555 and divide it by 2:
616,120,555 ÷ 2 = 308,060,277.5
If the quotient is a whole number, then 2 and 308,060,277.5 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 | 616,120,555 | |
| -1 | -616,120,555 |
Now, we try dividing 616,120,555 by 3:
616,120,555 ÷ 3 = 205,373,518.3333
If the quotient is a whole number, then 3 and 205,373,518.3333 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 | 616,120,555 | |
| -1 | -616,120,555 |
Let's try dividing by 4:
616,120,555 ÷ 4 = 154,030,138.75
If the quotient is a whole number, then 4 and 154,030,138.75 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 | 616,120,555 | |
| -1 | 616,120,555 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 215 | 541 | 2,705 | 5,297 | 23,263 | 26,485 | 116,315 | 227,771 | 1,138,855 | 2,865,677 | 14,328,385 | 123,224,111 | 616,120,555 |
| -1 | -5 | -43 | -215 | -541 | -2,705 | -5,297 | -23,263 | -26,485 | -116,315 | -227,771 | -1,138,855 | -2,865,677 | -14,328,385 | -123,224,111 | -616,120,555 |
Here are some more numbers to try:
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