List all the numbers by which - 30 is
exactly divisible.
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2
1 , 2 , 3 , 5 , 6 , 10 , 15 , 30
Answered by
1
Answer:
30 is divisible by 1, 2, 3, 5, 6, 10, 15 and 30; its divisors sum to 72; it is thus congruent to 2 mod 4: a(n) = 4n+2, i.e., is an integer possessing equal numbers of odd and even divisors (aka singly even numbers)
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