81217400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:142

約数の個数: 192

約数和(自身を含む): 227664000

約数和(自身を除く): 146446600

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 25, 29, 38, 40, 44, 50, 55, 58, 67, 76, 88, 95, 100, 110, 116, 134, 145, 152, 190, 200, 209, 220, 232, 268, 275, 290, 319, 335, 380, 418, 440, 475, 536, 550, 551, 580, 638, 670, 725, 737, 760, 836, 950, 1045, 1100, 1102, 1160, 1273, 1276, 1340, 1450, 1474, 1595, 1672, 1675, 1900, 1943, 2090, 2200, 2204, 2546, 2552, 2680, 2755, 2900, 2948, 3190, 3350, 3685, 3800, 3886, 4180, 4408, 5092, 5225, 5510, 5800, 5896, 6061, 6365, 6380, 6700, 7370, 7772, 7975, 8360, 9715, 10184, 10450, 11020, 12122, 12730, 12760, 13400, 13775, 14003, 14740, 15544, 15950, 18425, 19430, 20900, 21373, 22040, 24244, 25460, 27550, 28006, 29480, 30305, 31825, 31900, 36850, 36917, 38860, 41800, 42746, 48488, 48575, 50920, 55100, 56012, 60610, 63650, 63800, 70015, 73700, 73834, 77720, 85492, 97150, 106865, 110200, 112024, 121220, 127300, 140030, 147400, 147668, 151525, 170984, 184585, 194300, 213730, 242440, 254600, 280060, 295336, 303050, 350075, 369170, 388600, 406087, 427460, 534325, 560120, 606100, 700150, 738340, 812174, 854920, 922925, 1068650, 1212200, 1400300, 1476680, 1624348, 1845850, 2030435, 2137300, 2800600, 3248696, 3691700, 4060870, 4274600, 7383400, 8121740, 10152175, 16243480, 20304350, 40608700, 81217400]

約数ペア:

[(1, 81217400), (2, 40608700), (4, 20304350), (5, 16243480), (8, 10152175), (10, 8121740), (11, 7383400), (19, 4274600), (20, 4060870), (22, 3691700), (25, 3248696), (29, 2800600), (38, 2137300), (40, 2030435), (44, 1845850), (50, 1624348), (55, 1476680), (58, 1400300), (67, 1212200), (76, 1068650), (88, 922925), (95, 854920), (100, 812174), (110, 738340), (116, 700150), (134, 606100), (145, 560120), (152, 534325), (190, 427460), (200, 406087), (209, 388600), (220, 369170), (232, 350075), (268, 303050), (275, 295336), (290, 280060), (319, 254600), (335, 242440), (380, 213730), (418, 194300), (440, 184585), (475, 170984), (536, 151525), (550, 147668), (551, 147400), (580, 140030), (638, 127300), (670, 121220), (725, 112024), (737, 110200), (760, 106865), (836, 97150), (950, 85492), (1045, 77720), (1100, 73834), (1102, 73700), (1160, 70015), (1273, 63800), (1276, 63650), (1340, 60610), (1450, 56012), (1474, 55100), (1595, 50920), (1672, 48575), (1675, 48488), (1900, 42746), (1943, 41800), (2090, 38860), (2200, 36917), (2204, 36850), (2546, 31900), (2552, 31825), (2680, 30305), (2755, 29480), (2900, 28006), (2948, 27550), (3190, 25460), (3350, 24244), (3685, 22040), (3800, 21373), (3886, 20900), (4180, 19430), (4408, 18425), (5092, 15950), (5225, 15544), (5510, 14740), (5800, 14003), (5896, 13775), (6061, 13400), (6365, 12760), (6380, 12730), (6700, 12122), (7370, 11020), (7772, 10450), (7975, 10184), (8360, 9715)]