81720496

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1$

素因数の和:251

約数の個数: 120

約数和(自身を含む): 199487232

約数和(自身を除く): 117766736

約数列:

[1, 2, 4, 8, 11, 13, 16, 17, 22, 26, 34, 44, 52, 68, 88, 104, 121, 136, 143, 176, 187, 191, 208, 221, 242, 272, 286, 374, 382, 442, 484, 572, 748, 764, 884, 968, 1144, 1496, 1528, 1573, 1768, 1936, 2057, 2101, 2288, 2431, 2483, 2992, 3056, 3146, 3247, 3536, 4114, 4202, 4862, 4966, 6292, 6494, 8228, 8404, 9724, 9932, 12584, 12988, 16456, 16808, 19448, 19864, 23111, 25168, 25976, 26741, 27313, 32912, 33616, 35717, 38896, 39728, 42211, 46222, 51952, 53482, 54626, 71434, 84422, 92444, 106964, 109252, 142868, 168844, 184888, 213928, 218504, 285736, 300443, 337688, 369776, 392887, 427856, 437008, 464321, 571472, 600886, 675376, 785774, 928642, 1201772, 1571548, 1857284, 2403544, 3143096, 3714568, 4807088, 5107531, 6286192, 7429136, 10215062, 20430124, 40860248, 81720496]

約数ペア:

[(1, 81720496), (2, 40860248), (4, 20430124), (8, 10215062), (11, 7429136), (13, 6286192), (16, 5107531), (17, 4807088), (22, 3714568), (26, 3143096), (34, 2403544), (44, 1857284), (52, 1571548), (68, 1201772), (88, 928642), (104, 785774), (121, 675376), (136, 600886), (143, 571472), (176, 464321), (187, 437008), (191, 427856), (208, 392887), (221, 369776), (242, 337688), (272, 300443), (286, 285736), (374, 218504), (382, 213928), (442, 184888), (484, 168844), (572, 142868), (748, 109252), (764, 106964), (884, 92444), (968, 84422), (1144, 71434), (1496, 54626), (1528, 53482), (1573, 51952), (1768, 46222), (1936, 42211), (2057, 39728), (2101, 38896), (2288, 35717), (2431, 33616), (2483, 32912), (2992, 27313), (3056, 26741), (3146, 25976), (3247, 25168), (3536, 23111), (4114, 19864), (4202, 19448), (4862, 16808), (4966, 16456), (6292, 12988), (6494, 12584), (8228, 9932), (8404, 9724)]