281432008

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{499}}^1$

素因数の和:575

約数の個数: 128

約数和(自身を含む): 680400000

約数和(自身を除く): 398967992

約数列:

[1, 2, 4, 8, 11, 13, 17, 22, 26, 29, 34, 44, 52, 58, 68, 88, 104, 116, 136, 143, 187, 221, 232, 286, 319, 374, 377, 442, 493, 499, 572, 638, 748, 754, 884, 986, 998, 1144, 1276, 1496, 1508, 1768, 1972, 1996, 2431, 2552, 3016, 3944, 3992, 4147, 4862, 5423, 5489, 6409, 6487, 8294, 8483, 9724, 10846, 10978, 12818, 12974, 14471, 16588, 16966, 19448, 21692, 21956, 25636, 25948, 28942, 33176, 33932, 43384, 43912, 51272, 51896, 57884, 67864, 70499, 71357, 93313, 110279, 115768, 140998, 142714, 159181, 186626, 188123, 220558, 246007, 281996, 285428, 318362, 373252, 376246, 441116, 492014, 563992, 570856, 636724, 746504, 752492, 882232, 984028, 1213069, 1273448, 1504984, 1968056, 2069353, 2426138, 2706077, 3198091, 4138706, 4852276, 5412154, 6396182, 8277412, 9704552, 10824308, 12792364, 16554824, 21648616, 25584728, 35179001, 70358002, 140716004, 281432008]

約数ペア:

[(1, 281432008), (2, 140716004), (4, 70358002), (8, 35179001), (11, 25584728), (13, 21648616), (17, 16554824), (22, 12792364), (26, 10824308), (29, 9704552), (34, 8277412), (44, 6396182), (52, 5412154), (58, 4852276), (68, 4138706), (88, 3198091), (104, 2706077), (116, 2426138), (136, 2069353), (143, 1968056), (187, 1504984), (221, 1273448), (232, 1213069), (286, 984028), (319, 882232), (374, 752492), (377, 746504), (442, 636724), (493, 570856), (499, 563992), (572, 492014), (638, 441116), (748, 376246), (754, 373252), (884, 318362), (986, 285428), (998, 281996), (1144, 246007), (1276, 220558), (1496, 188123), (1508, 186626), (1768, 159181), (1972, 142714), (1996, 140998), (2431, 115768), (2552, 110279), (3016, 93313), (3944, 71357), (3992, 70499), (4147, 67864), (4862, 57884), (5423, 51896), (5489, 51272), (6409, 43912), (6487, 43384), (8294, 33932), (8483, 33176), (9724, 28942), (10846, 25948), (10978, 25636), (12818, 21956), (12974, 21692), (14471, 19448), (16588, 16966)]