81579120

素因数分解:

$2^4\times 3^1\times 5^1\times 7^3\times {\mathrm{991}}^1$

素因数の和:1028

約数の個数: 160

約数和(自身を含む): 295219200

約数和(自身を除く): 213640080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 343, 392, 420, 490, 560, 588, 686, 735, 784, 840, 980, 991, 1029, 1176, 1372, 1470, 1680, 1715, 1960, 1982, 2058, 2352, 2744, 2940, 2973, 3430, 3920, 3964, 4116, 4955, 5145, 5488, 5880, 5946, 6860, 6937, 7928, 8232, 9910, 10290, 11760, 11892, 13720, 13874, 14865, 15856, 16464, 19820, 20580, 20811, 23784, 27440, 27748, 29730, 34685, 39640, 41160, 41622, 47568, 48559, 55496, 59460, 69370, 79280, 82320, 83244, 97118, 104055, 110992, 118920, 138740, 145677, 166488, 194236, 208110, 237840, 242795, 277480, 291354, 332976, 339913, 388472, 416220, 485590, 554960, 582708, 679826, 728385, 776944, 832440, 971180, 1019739, 1165416, 1359652, 1456770, 1664880, 1699565, 1942360, 2039478, 2330832, 2719304, 2913540, 3399130, 3884720, 4078956, 5098695, 5438608, 5827080, 6798260, 8157912, 10197390, 11654160, 13596520, 16315824, 20394780, 27193040, 40789560, 81579120]

約数ペア:

[(1, 81579120), (2, 40789560), (3, 27193040), (4, 20394780), (5, 16315824), (6, 13596520), (7, 11654160), (8, 10197390), (10, 8157912), (12, 6798260), (14, 5827080), (15, 5438608), (16, 5098695), (20, 4078956), (21, 3884720), (24, 3399130), (28, 2913540), (30, 2719304), (35, 2330832), (40, 2039478), (42, 1942360), (48, 1699565), (49, 1664880), (56, 1456770), (60, 1359652), (70, 1165416), (80, 1019739), (84, 971180), (98, 832440), (105, 776944), (112, 728385), (120, 679826), (140, 582708), (147, 554960), (168, 485590), (196, 416220), (210, 388472), (240, 339913), (245, 332976), (280, 291354), (294, 277480), (336, 242795), (343, 237840), (392, 208110), (420, 194236), (490, 166488), (560, 145677), (588, 138740), (686, 118920), (735, 110992), (784, 104055), (840, 97118), (980, 83244), (991, 82320), (1029, 79280), (1176, 69370), (1372, 59460), (1470, 55496), (1680, 48559), (1715, 47568), (1960, 41622), (1982, 41160), (2058, 39640), (2352, 34685), (2744, 29730), (2940, 27748), (2973, 27440), (3430, 23784), (3920, 20811), (3964, 20580), (4116, 19820), (4955, 16464), (5145, 15856), (5488, 14865), (5880, 13874), (5946, 13720), (6860, 11892), (6937, 11760), (7928, 10290), (8232, 9910)]