A:
Positive:
1 x 1451435055 x 2902870113 x 1116488565 x 2232977239 x 6072951195 x 1214593107 x 467159343 x 15535
Negative:
-1 x -145143505-5 x -29028701-13 x -11164885-65 x -2232977-239 x -607295-1195 x -121459-3107 x -46715-9343 x -15535
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 145,143,505, 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 | 145,143,505 | |
| -1 | -145,143,505 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 145,143,505.
Example:
1 x 145,143,505 = 145,143,505
and
-1 x -145,143,505 = 145,143,505
Notice both answers equal 145,143,505
With that explanation out of the way, let's continue. Next, we take the number 145,143,505 and divide it by 2:
145,143,505 ÷ 2 = 72,571,752.5
If the quotient is a whole number, then 2 and 72,571,752.5 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 | 145,143,505 | |
| -1 | -145,143,505 |
Now, we try dividing 145,143,505 by 3:
145,143,505 ÷ 3 = 48,381,168.3333
If the quotient is a whole number, then 3 and 48,381,168.3333 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 | 145,143,505 | |
| -1 | -145,143,505 |
Let's try dividing by 4:
145,143,505 ÷ 4 = 36,285,876.25
If the quotient is a whole number, then 4 and 36,285,876.25 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 | 145,143,505 | |
| -1 | 145,143,505 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 239 | 1,195 | 3,107 | 9,343 | 15,535 | 46,715 | 121,459 | 607,295 | 2,232,977 | 11,164,885 | 29,028,701 | 145,143,505 |
| -1 | -5 | -13 | -65 | -239 | -1,195 | -3,107 | -9,343 | -15,535 | -46,715 | -121,459 | -607,295 | -2,232,977 | -11,164,885 | -29,028,701 | -145,143,505 |
Here are some more numbers to try:
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