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A351709
a(n) = Sum_{p|n, p prime} p!.
2
0, 2, 6, 2, 120, 8, 5040, 2, 6, 122, 39916800, 8, 6227020800, 5042, 126, 2, 355687428096000, 8, 121645100408832000, 122, 5046, 39916802, 25852016738884976640000, 8, 120, 6227020802, 6, 5042, 8841761993739701954543616000000, 128, 8222838654177922817725562880000000
OFFSET
1,2
EXAMPLE
a(6) = 8; a(6) = Sum_{p|6} p! = 2! + 3! = 2*1 + 3*2*1 = 8.
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Feb 16 2022
STATUS
approved