A:
Positive:
1 x 702791455 x 1405582923 x 3055615115 x 611123239 x 2940551195 x 588112557 x 274855497 x 12785
Negative:
-1 x -70279145-5 x -14055829-23 x -3055615-115 x -611123-239 x -294055-1195 x -58811-2557 x -27485-5497 x -12785
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 70,279,145, 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 | 70,279,145 | |
| -1 | -70,279,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 70,279,145.
Example:
1 x 70,279,145 = 70,279,145
and
-1 x -70,279,145 = 70,279,145
Notice both answers equal 70,279,145
With that explanation out of the way, let's continue. Next, we take the number 70,279,145 and divide it by 2:
70,279,145 ÷ 2 = 35,139,572.5
If the quotient is a whole number, then 2 and 35,139,572.5 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 | 70,279,145 | |
| -1 | -70,279,145 |
Now, we try dividing 70,279,145 by 3:
70,279,145 ÷ 3 = 23,426,381.6667
If the quotient is a whole number, then 3 and 23,426,381.6667 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 | 70,279,145 | |
| -1 | -70,279,145 |
Let's try dividing by 4:
70,279,145 ÷ 4 = 17,569,786.25
If the quotient is a whole number, then 4 and 17,569,786.25 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 | 70,279,145 | |
| -1 | 70,279,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 239 | 1,195 | 2,557 | 5,497 | 12,785 | 27,485 | 58,811 | 294,055 | 611,123 | 3,055,615 | 14,055,829 | 70,279,145 |
| -1 | -5 | -23 | -115 | -239 | -1,195 | -2,557 | -5,497 | -12,785 | -27,485 | -58,811 | -294,055 | -611,123 | -3,055,615 | -14,055,829 | -70,279,145 |
Here are some more numbers to try:
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