81289320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:168

約数の個数: 256

約数和(自身を含む): 298598400

約数和(自身を除く): 217309080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 29, 30, 35, 40, 42, 47, 56, 58, 60, 70, 71, 84, 87, 94, 105, 116, 120, 140, 141, 142, 145, 168, 174, 188, 203, 210, 213, 232, 235, 280, 282, 284, 290, 329, 348, 355, 376, 406, 420, 426, 435, 470, 497, 564, 568, 580, 609, 658, 696, 705, 710, 812, 840, 852, 870, 940, 987, 994, 1015, 1065, 1128, 1160, 1218, 1316, 1363, 1410, 1420, 1491, 1624, 1645, 1704, 1740, 1880, 1974, 1988, 2030, 2059, 2130, 2436, 2485, 2632, 2726, 2820, 2840, 2982, 3045, 3290, 3337, 3480, 3948, 3976, 4060, 4089, 4118, 4260, 4872, 4935, 4970, 5452, 5640, 5964, 6090, 6177, 6580, 6674, 6815, 7455, 7896, 8120, 8178, 8236, 8520, 9541, 9870, 9940, 10011, 10295, 10904, 11928, 12180, 12354, 13160, 13348, 13630, 14413, 14910, 16356, 16472, 16685, 19082, 19740, 19880, 20022, 20445, 20590, 23359, 24360, 24708, 26696, 27260, 28623, 28826, 29820, 30885, 32712, 33370, 38164, 39480, 40044, 40890, 41180, 43239, 46718, 47705, 49416, 50055, 54520, 57246, 57652, 59640, 61770, 66740, 70077, 72065, 76328, 80088, 81780, 82360, 86478, 93436, 95410, 96773, 100110, 114492, 115304, 116795, 123540, 133480, 140154, 143115, 144130, 163560, 172956, 186872, 190820, 193546, 200220, 216195, 228984, 233590, 247080, 280308, 286230, 288260, 290319, 345912, 350385, 381640, 387092, 400440, 432390, 467180, 483865, 560616, 572460, 576520, 580638, 677411, 700770, 774184, 864780, 934360, 967730, 1144920, 1161276, 1354822, 1401540, 1451595, 1729560, 1935460, 2032233, 2322552, 2709644, 2803080, 2903190, 3387055, 3870920, 4064466, 5419288, 5806380, 6774110, 8128932, 10161165, 11612760, 13548220, 16257864, 20322330, 27096440, 40644660, 81289320]

約数ペア:

[(1, 81289320), (2, 40644660), (3, 27096440), (4, 20322330), (5, 16257864), (6, 13548220), (7, 11612760), (8, 10161165), (10, 8128932), (12, 6774110), (14, 5806380), (15, 5419288), (20, 4064466), (21, 3870920), (24, 3387055), (28, 2903190), (29, 2803080), (30, 2709644), (35, 2322552), (40, 2032233), (42, 1935460), (47, 1729560), (56, 1451595), (58, 1401540), (60, 1354822), (70, 1161276), (71, 1144920), (84, 967730), (87, 934360), (94, 864780), (105, 774184), (116, 700770), (120, 677411), (140, 580638), (141, 576520), (142, 572460), (145, 560616), (168, 483865), (174, 467180), (188, 432390), (203, 400440), (210, 387092), (213, 381640), (232, 350385), (235, 345912), (280, 290319), (282, 288260), (284, 286230), (290, 280308), (329, 247080), (348, 233590), (355, 228984), (376, 216195), (406, 200220), (420, 193546), (426, 190820), (435, 186872), (470, 172956), (497, 163560), (564, 144130), (568, 143115), (580, 140154), (609, 133480), (658, 123540), (696, 116795), (705, 115304), (710, 114492), (812, 100110), (840, 96773), (852, 95410), (870, 93436), (940, 86478), (987, 82360), (994, 81780), (1015, 80088), (1065, 76328), (1128, 72065), (1160, 70077), (1218, 66740), (1316, 61770), (1363, 59640), (1410, 57652), (1420, 57246), (1491, 54520), (1624, 50055), (1645, 49416), (1704, 47705), (1740, 46718), (1880, 43239), (1974, 41180), (1988, 40890), (2030, 40044), (2059, 39480), (2130, 38164), (2436, 33370), (2485, 32712), (2632, 30885), (2726, 29820), (2820, 28826), (2840, 28623), (2982, 27260), (3045, 26696), (3290, 24708), (3337, 24360), (3480, 23359), (3948, 20590), (3976, 20445), (4060, 20022), (4089, 19880), (4118, 19740), (4260, 19082), (4872, 16685), (4935, 16472), (4970, 16356), (5452, 14910), (5640, 14413), (5964, 13630), (6090, 13348), (6177, 13160), (6580, 12354), (6674, 12180), (6815, 11928), (7455, 10904), (7896, 10295), (8120, 10011), (8178, 9940), (8236, 9870), (8520, 9541)]