20187389740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:528

約数の個数: 192

約数和(自身を含む): 50627985408

約数和(自身を除く): 30440595668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 97, 140, 172, 181, 191, 194, 215, 301, 362, 382, 388, 430, 485, 602, 679, 724, 764, 860, 905, 955, 970, 1204, 1267, 1337, 1358, 1505, 1810, 1910, 1940, 2534, 2674, 2716, 3010, 3395, 3620, 3820, 4171, 5068, 5348, 6020, 6335, 6685, 6790, 7783, 8213, 8342, 12670, 13370, 13580, 15566, 16426, 16684, 17557, 18527, 20855, 25340, 26740, 29197, 31132, 32852, 34571, 35114, 37054, 38915, 41065, 41710, 54481, 57491, 58394, 69142, 70228, 74108, 77830, 82130, 83420, 87785, 92635, 108962, 114982, 116788, 122899, 129689, 138284, 145985, 155660, 164260, 172855, 175570, 185270, 217924, 229964, 241997, 245798, 259378, 272405, 287455, 291970, 345710, 351140, 370540, 483994, 491596, 518756, 544810, 574910, 583940, 614495, 648445, 691420, 754951, 796661, 967988, 1089620, 1149820, 1209985, 1228990, 1296890, 1486553, 1509902, 1593322, 2419970, 2457980, 2593780, 2973106, 3019804, 3186644, 3353387, 3774755, 3983305, 4839940, 5284657, 5576627, 5946212, 6706774, 7432765, 7549510, 7966610, 10405871, 10569314, 11153254, 13413548, 14865530, 15099020, 15933220, 16766935, 20811742, 21138628, 22306508, 23473709, 26423285, 27883135, 29731060, 33533870, 41623484, 46947418, 52029355, 52846570, 55766270, 67067740, 93894836, 104058710, 105693140, 111532540, 117368545, 144195641, 208117420, 234737090, 288391282, 469474180, 576782564, 720978205, 1009369487, 1441956410, 2018738974, 2883912820, 4037477948, 5046847435, 10093694870, 20187389740]

約数ペア:

[(1, 20187389740), (2, 10093694870), (4, 5046847435), (5, 4037477948), (7, 2883912820), (10, 2018738974), (14, 1441956410), (20, 1009369487), (28, 720978205), (35, 576782564), (43, 469474180), (70, 288391282), (86, 234737090), (97, 208117420), (140, 144195641), (172, 117368545), (181, 111532540), (191, 105693140), (194, 104058710), (215, 93894836), (301, 67067740), (362, 55766270), (382, 52846570), (388, 52029355), (430, 46947418), (485, 41623484), (602, 33533870), (679, 29731060), (724, 27883135), (764, 26423285), (860, 23473709), (905, 22306508), (955, 21138628), (970, 20811742), (1204, 16766935), (1267, 15933220), (1337, 15099020), (1358, 14865530), (1505, 13413548), (1810, 11153254), (1910, 10569314), (1940, 10405871), (2534, 7966610), (2674, 7549510), (2716, 7432765), (3010, 6706774), (3395, 5946212), (3620, 5576627), (3820, 5284657), (4171, 4839940), (5068, 3983305), (5348, 3774755), (6020, 3353387), (6335, 3186644), (6685, 3019804), (6790, 2973106), (7783, 2593780), (8213, 2457980), (8342, 2419970), (12670, 1593322), (13370, 1509902), (13580, 1486553), (15566, 1296890), (16426, 1228990), (16684, 1209985), (17557, 1149820), (18527, 1089620), (20855, 967988), (25340, 796661), (26740, 754951), (29197, 691420), (31132, 648445), (32852, 614495), (34571, 583940), (35114, 574910), (37054, 544810), (38915, 518756), (41065, 491596), (41710, 483994), (54481, 370540), (57491, 351140), (58394, 345710), (69142, 291970), (70228, 287455), (74108, 272405), (77830, 259378), (82130, 245798), (83420, 241997), (87785, 229964), (92635, 217924), (108962, 185270), (114982, 175570), (116788, 172855), (122899, 164260), (129689, 155660), (138284, 145985)]