81710421

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1283}}^1$

素因数の和:1393

約数の個数: 32

約数和(自身を含む): 124250112

約数和(自身を除く): 42539691

約数列:

[1, 3, 13, 23, 39, 69, 71, 213, 299, 897, 923, 1283, 1633, 2769, 3849, 4899, 16679, 21229, 29509, 50037, 63687, 88527, 91093, 273279, 383617, 1150851, 1184209, 2095139, 3552627, 6285417, 27236807, 81710421]

約数ペア:

[(1, 81710421), (3, 27236807), (13, 6285417), (23, 3552627), (39, 2095139), (69, 1184209), (71, 1150851), (213, 383617), (299, 273279), (897, 91093), (923, 88527), (1283, 63687), (1633, 50037), (2769, 29509), (3849, 21229), (4899, 16679)]