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A073181
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Sum of divisors of n which are not greater than the squarefree kernel of n.
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3
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1, 3, 4, 3, 6, 12, 8, 3, 4, 18, 12, 16, 14, 24, 24, 3, 18, 12, 20, 22, 32, 36, 24, 16, 6, 42, 4, 28, 30, 72, 32, 3, 48, 54, 48, 16, 38, 60, 56, 30, 42, 96, 44, 40, 33, 72, 48, 16, 8, 18, 72, 46, 54, 12, 72, 36, 80, 90, 60, 108, 62, 96, 41, 3, 84, 144, 68, 58, 96, 144, 72, 16, 74
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| a(n) >= A048250(n).
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EXAMPLE
| The squarefree kernel of 56=7*2^3 is 14=7*2 and the divisors <= 14 of 56 are {1, 2, 4, 7, 8, 14}, therefore a(56)=1+2+4+7+8+14=36.
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CROSSREFS
| Cf. A000203, A073180, A073183.
Sequence in context: A101684 A061800 A048250 * A183100 A046897 A109506
Adjacent sequences: A073178 A073179 A073180 * A073182 A073183 A073184
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KEYWORD
| nonn
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AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 19 2002
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