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A069192 Sum of the reversals of the divisors of n. 6
1, 3, 4, 7, 6, 12, 8, 15, 13, 9, 12, 37, 32, 51, 60, 76, 72, 102, 92, 15, 23, 36, 33, 87, 58, 96, 85, 137, 93, 72, 14, 99, 48, 117, 66, 190, 74, 177, 128, 27, 15, 96, 35, 84, 123, 99, 75, 232, 102, 66, 90, 125, 36, 219, 72, 210, 170, 180, 96, 105, 17, 42, 68, 145, 93, 144, 77, 207, 132, 117, 18, 267, 38, 123, 169, 248 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Indranil Ghosh, Table of n, a(n) for n = 1..50000

Pe, J. The Picture-Perfect Numbers

EXAMPLE

The divisors of 10 are 1,2,5,10, which reversed are 1,2,5,1, summing to 9. Therefore a(10) = 9.

MAPLE

read("transforms") ;

A069192 := proc(n)

        add(digrev(d), d=numtheory[divisors](n)) ;

end proc: # R. J. Mathar, Sep 09 2015

MATHEMATICA

f[n_] := FromDigits[Reverse[IntegerDigits[n]]]; g[n_] := Apply[Plus, Map[f, Divisors[n]]]; Table[g[i], {i, 1, 40}]

PROG

(Python)

def A069192(n):

....s=0

....for i in range(1, n+1):

........if n%i==0: s+=int(str(i)[::-1])

....return s # Indranil Ghosh, Feb 10 2017

CROSSREFS

Cf. A000203, A069250.

Sequence in context: A284344 A168338 A034690 * A076887 A140782 A284587

Adjacent sequences:  A069189 A069190 A069191 * A069193 A069194 A069195

KEYWORD

base,nonn

AUTHOR

Joseph L. Pe, Apr 19 2002

EXTENSIONS

Added more terms, corrected offset. - N. J. A. Sloane, May 19 2013

STATUS

approved

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Last modified November 12 17:06 EST 2019. Contains 329058 sequences. (Running on oeis4.)