81192720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1559}}^1$

素因数の和:1613

約数の個数: 160

約数和(自身を含む): 297123840

約数和(自身を除く): 215931120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 105, 112, 120, 124, 140, 155, 168, 186, 210, 217, 240, 248, 280, 310, 336, 372, 420, 434, 465, 496, 560, 620, 651, 744, 840, 868, 930, 1085, 1240, 1302, 1488, 1559, 1680, 1736, 1860, 2170, 2480, 2604, 3118, 3255, 3472, 3720, 4340, 4677, 5208, 6236, 6510, 7440, 7795, 8680, 9354, 10416, 10913, 12472, 13020, 15590, 17360, 18708, 21826, 23385, 24944, 26040, 31180, 32739, 37416, 43652, 46770, 48329, 52080, 54565, 62360, 65478, 74832, 87304, 93540, 96658, 109130, 124720, 130956, 144987, 163695, 174608, 187080, 193316, 218260, 241645, 261912, 289974, 327390, 338303, 374160, 386632, 436520, 483290, 523824, 579948, 654780, 676606, 724935, 773264, 873040, 966580, 1014909, 1159896, 1309560, 1353212, 1449870, 1691515, 1933160, 2029818, 2319792, 2619120, 2706424, 2899740, 3383030, 3866320, 4059636, 5074545, 5412848, 5799480, 6766060, 8119272, 10149090, 11598960, 13532120, 16238544, 20298180, 27064240, 40596360, 81192720]

約数ペア:

[(1, 81192720), (2, 40596360), (3, 27064240), (4, 20298180), (5, 16238544), (6, 13532120), (7, 11598960), (8, 10149090), (10, 8119272), (12, 6766060), (14, 5799480), (15, 5412848), (16, 5074545), (20, 4059636), (21, 3866320), (24, 3383030), (28, 2899740), (30, 2706424), (31, 2619120), (35, 2319792), (40, 2029818), (42, 1933160), (48, 1691515), (56, 1449870), (60, 1353212), (62, 1309560), (70, 1159896), (80, 1014909), (84, 966580), (93, 873040), (105, 773264), (112, 724935), (120, 676606), (124, 654780), (140, 579948), (155, 523824), (168, 483290), (186, 436520), (210, 386632), (217, 374160), (240, 338303), (248, 327390), (280, 289974), (310, 261912), (336, 241645), (372, 218260), (420, 193316), (434, 187080), (465, 174608), (496, 163695), (560, 144987), (620, 130956), (651, 124720), (744, 109130), (840, 96658), (868, 93540), (930, 87304), (1085, 74832), (1240, 65478), (1302, 62360), (1488, 54565), (1559, 52080), (1680, 48329), (1736, 46770), (1860, 43652), (2170, 37416), (2480, 32739), (2604, 31180), (3118, 26040), (3255, 24944), (3472, 23385), (3720, 21826), (4340, 18708), (4677, 17360), (5208, 15590), (6236, 13020), (6510, 12472), (7440, 10913), (7795, 10416), (8680, 9354)]