1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390.
They are: 21+6+2 = 29
There is an infinite amount of answers to that, such as: 301 + 89 = 390 3 + 387 = 390 150 + 240 = 390
The factors of 21 that add up to 8 are 1 and 7.
About 390 miles if you pick up Hwy 29 around Llano, TX.
None. Factors don't add, they multiply.
The factors of 8 are 1, 2, 4, and 8. The factors that add up to 10 are 2 and 8.
It wasn't me, but I would have come up with 33. The four factors of 33 add up to 48.
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factors of 30 that add to 17 are 2 and 15