A:
Positive:
1 x 1440212155 x 2880424313 x 1107855565 x 2215711211 x 6825651055 x 1365132743 x 5250510501 x 13715
Negative:
-1 x -144021215-5 x -28804243-13 x -11078555-65 x -2215711-211 x -682565-1055 x -136513-2743 x -52505-10501 x -13715
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 144,021,215, 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 | 144,021,215 | |
| -1 | -144,021,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 144,021,215.
Example:
1 x 144,021,215 = 144,021,215
and
-1 x -144,021,215 = 144,021,215
Notice both answers equal 144,021,215
With that explanation out of the way, let's continue. Next, we take the number 144,021,215 and divide it by 2:
144,021,215 ÷ 2 = 72,010,607.5
If the quotient is a whole number, then 2 and 72,010,607.5 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 | 144,021,215 | |
| -1 | -144,021,215 |
Now, we try dividing 144,021,215 by 3:
144,021,215 ÷ 3 = 48,007,071.6667
If the quotient is a whole number, then 3 and 48,007,071.6667 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 | 144,021,215 | |
| -1 | -144,021,215 |
Let's try dividing by 4:
144,021,215 ÷ 4 = 36,005,303.75
If the quotient is a whole number, then 4 and 36,005,303.75 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 | 144,021,215 | |
| -1 | 144,021,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 211 | 1,055 | 2,743 | 10,501 | 13,715 | 52,505 | 136,513 | 682,565 | 2,215,711 | 11,078,555 | 28,804,243 | 144,021,215 |
| -1 | -5 | -13 | -65 | -211 | -1,055 | -2,743 | -10,501 | -13,715 | -52,505 | -136,513 | -682,565 | -2,215,711 | -11,078,555 | -28,804,243 | -144,021,215 |
Here are some more numbers to try:
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