81283860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2081}}^1$

素因数の和:2134

約数の個数: 144

約数和(自身を含む): 291013632

約数和(自身を除く): 209729772

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 558, 620, 630, 651, 868, 930, 1085, 1116, 1260, 1302, 1395, 1860, 1953, 2081, 2170, 2604, 2790, 3255, 3906, 4162, 4340, 5580, 6243, 6510, 7812, 8324, 9765, 10405, 12486, 13020, 14567, 18729, 19530, 20810, 24972, 29134, 31215, 37458, 39060, 41620, 43701, 58268, 62430, 64511, 72835, 74916, 87402, 93645, 124860, 129022, 131103, 145670, 174804, 187290, 193533, 218505, 258044, 262206, 291340, 322555, 374580, 387066, 437010, 451577, 524412, 580599, 645110, 655515, 774132, 874020, 903154, 967665, 1161198, 1290220, 1311030, 1354731, 1806308, 1935330, 2257885, 2322396, 2622060, 2709462, 2902995, 3870660, 4064193, 4515770, 5418924, 5805990, 6773655, 8128386, 9031540, 11611980, 13547310, 16256772, 20320965, 27094620, 40641930, 81283860]

約数ペア:

[(1, 81283860), (2, 40641930), (3, 27094620), (4, 20320965), (5, 16256772), (6, 13547310), (7, 11611980), (9, 9031540), (10, 8128386), (12, 6773655), (14, 5805990), (15, 5418924), (18, 4515770), (20, 4064193), (21, 3870660), (28, 2902995), (30, 2709462), (31, 2622060), (35, 2322396), (36, 2257885), (42, 1935330), (45, 1806308), (60, 1354731), (62, 1311030), (63, 1290220), (70, 1161198), (84, 967665), (90, 903154), (93, 874020), (105, 774132), (124, 655515), (126, 645110), (140, 580599), (155, 524412), (180, 451577), (186, 437010), (210, 387066), (217, 374580), (252, 322555), (279, 291340), (310, 262206), (315, 258044), (372, 218505), (420, 193533), (434, 187290), (465, 174804), (558, 145670), (620, 131103), (630, 129022), (651, 124860), (868, 93645), (930, 87402), (1085, 74916), (1116, 72835), (1260, 64511), (1302, 62430), (1395, 58268), (1860, 43701), (1953, 41620), (2081, 39060), (2170, 37458), (2604, 31215), (2790, 29134), (3255, 24972), (3906, 20810), (4162, 19530), (4340, 18729), (5580, 14567), (6243, 13020), (6510, 12486), (7812, 10405), (8324, 9765)]