81037880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{317}}^1$

素因数の和:429

約数の個数: 128

約数和(自身を含む): 230791680

約数和(自身を除く): 149753800

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 83, 88, 110, 140, 154, 166, 220, 280, 308, 317, 332, 385, 415, 440, 581, 616, 634, 664, 770, 830, 913, 1162, 1268, 1540, 1585, 1660, 1826, 2219, 2324, 2536, 2905, 3080, 3170, 3320, 3487, 3652, 4438, 4565, 4648, 5810, 6340, 6391, 6974, 7304, 8876, 9130, 11095, 11620, 12680, 12782, 13948, 17435, 17752, 18260, 22190, 23240, 24409, 25564, 26311, 27896, 31955, 34870, 36520, 44380, 48818, 51128, 52622, 63910, 69740, 88760, 97636, 105244, 122045, 127820, 131555, 139480, 184177, 195272, 210488, 244090, 255640, 263110, 289421, 368354, 488180, 526220, 578842, 736708, 920885, 976360, 1052440, 1157684, 1447105, 1473416, 1841770, 2025947, 2315368, 2894210, 3683540, 4051894, 5788420, 7367080, 8103788, 10129735, 11576840, 16207576, 20259470, 40518940, 81037880]

約数ペア:

[(1, 81037880), (2, 40518940), (4, 20259470), (5, 16207576), (7, 11576840), (8, 10129735), (10, 8103788), (11, 7367080), (14, 5788420), (20, 4051894), (22, 3683540), (28, 2894210), (35, 2315368), (40, 2025947), (44, 1841770), (55, 1473416), (56, 1447105), (70, 1157684), (77, 1052440), (83, 976360), (88, 920885), (110, 736708), (140, 578842), (154, 526220), (166, 488180), (220, 368354), (280, 289421), (308, 263110), (317, 255640), (332, 244090), (385, 210488), (415, 195272), (440, 184177), (581, 139480), (616, 131555), (634, 127820), (664, 122045), (770, 105244), (830, 97636), (913, 88760), (1162, 69740), (1268, 63910), (1540, 52622), (1585, 51128), (1660, 48818), (1826, 44380), (2219, 36520), (2324, 34870), (2536, 31955), (2905, 27896), (3080, 26311), (3170, 25564), (3320, 24409), (3487, 23240), (3652, 22190), (4438, 18260), (4565, 17752), (4648, 17435), (5810, 13948), (6340, 12782), (6391, 12680), (6974, 11620), (7304, 11095), (8876, 9130)]