81997758

素因数分解:

$2^1\times 3^4\times {\mathrm{71}}^1\times {\mathrm{7129}}^1$

素因数の和:7214

約数の個数: 40

約数和(自身を含む): 186349680

約数和(自身を除く): 104351922

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 81, 142, 162, 213, 426, 639, 1278, 1917, 3834, 5751, 7129, 11502, 14258, 21387, 42774, 64161, 128322, 192483, 384966, 506159, 577449, 1012318, 1154898, 1518477, 3036954, 4555431, 9110862, 13666293, 27332586, 40998879, 81997758]

約数ペア:

[(1, 81997758), (2, 40998879), (3, 27332586), (6, 13666293), (9, 9110862), (18, 4555431), (27, 3036954), (54, 1518477), (71, 1154898), (81, 1012318), (142, 577449), (162, 506159), (213, 384966), (426, 192483), (639, 128322), (1278, 64161), (1917, 42774), (3834, 21387), (5751, 14258), (7129, 11502)]