OFFSET
1,3
LINKS
FORMULA
Additive with a(p^e) = e*A064989(p).
PROG
(PARI) A373149(n) = { my(f = factor(n)); sum(i = 1, #f~, f[i, 2]*if(2==f[i, 1], 1, precprime(f[i, 1] - 1))); };
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jun 02 2024
STATUS
approved