81604260

素因数分解:

$2^2\times 3^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1$

素因数の和:249

約数の個数: 168

約数和(自身を含む): 267172920

約数和(自身を除く): 185568660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 36, 45, 54, 58, 60, 81, 87, 90, 108, 116, 135, 145, 162, 174, 180, 193, 243, 261, 270, 290, 324, 348, 386, 405, 435, 486, 522, 540, 579, 580, 729, 772, 783, 810, 870, 965, 972, 1044, 1158, 1215, 1305, 1458, 1566, 1620, 1737, 1740, 1930, 2316, 2349, 2430, 2610, 2895, 2916, 3132, 3474, 3645, 3860, 3915, 4698, 4860, 5211, 5220, 5597, 5790, 6948, 7047, 7290, 7830, 8685, 9396, 10422, 11194, 11580, 11745, 14094, 14580, 15633, 15660, 16791, 17370, 20844, 21141, 22388, 23490, 26055, 27985, 28188, 31266, 33582, 34740, 35235, 42282, 46899, 46980, 50373, 52110, 55970, 62532, 67164, 70470, 78165, 83955, 84564, 93798, 100746, 104220, 105705, 111940, 140697, 140940, 151119, 156330, 167910, 187596, 201492, 211410, 234495, 251865, 281394, 302238, 312660, 335820, 422820, 453357, 468990, 503730, 562788, 604476, 703485, 755595, 906714, 937980, 1007460, 1360071, 1406970, 1511190, 1813428, 2266785, 2720142, 2813940, 3022380, 4080213, 4533570, 5440284, 6800355, 8160426, 9067140, 13600710, 16320852, 20401065, 27201420, 40802130, 81604260]

約数ペア:

[(1, 81604260), (2, 40802130), (3, 27201420), (4, 20401065), (5, 16320852), (6, 13600710), (9, 9067140), (10, 8160426), (12, 6800355), (15, 5440284), (18, 4533570), (20, 4080213), (27, 3022380), (29, 2813940), (30, 2720142), (36, 2266785), (45, 1813428), (54, 1511190), (58, 1406970), (60, 1360071), (81, 1007460), (87, 937980), (90, 906714), (108, 755595), (116, 703485), (135, 604476), (145, 562788), (162, 503730), (174, 468990), (180, 453357), (193, 422820), (243, 335820), (261, 312660), (270, 302238), (290, 281394), (324, 251865), (348, 234495), (386, 211410), (405, 201492), (435, 187596), (486, 167910), (522, 156330), (540, 151119), (579, 140940), (580, 140697), (729, 111940), (772, 105705), (783, 104220), (810, 100746), (870, 93798), (965, 84564), (972, 83955), (1044, 78165), (1158, 70470), (1215, 67164), (1305, 62532), (1458, 55970), (1566, 52110), (1620, 50373), (1737, 46980), (1740, 46899), (1930, 42282), (2316, 35235), (2349, 34740), (2430, 33582), (2610, 31266), (2895, 28188), (2916, 27985), (3132, 26055), (3474, 23490), (3645, 22388), (3860, 21141), (3915, 20844), (4698, 17370), (4860, 16791), (5211, 15660), (5220, 15633), (5597, 14580), (5790, 14094), (6948, 11745), (7047, 11580), (7290, 11194), (7830, 10422), (8685, 9396)]