81736741.000000000

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:239

約数の個数: 160

約数和(自身を含む): 810614784

約数和(自身を除く): 489052816

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 37, 47, 52, 56, 74, 91, 94, 104, 112, 127, 148, 182, 188, 208, 254, 259, 296, 329, 364, 376, 481, 508, 518, 592, 611, 658, 728, 752, 889, 962, 1016, 1036, 1222, 1316, 1456, 1651, 1739, 1778, 1924, 2032, 2072, 2444, 2632, 3302, 3367, 3478, 3556, 3848, 4144, 4277, 4699, 4888, 5264, 5969, 6604, 6734, 6956, 7112, 7696, 8554, 9398, 9776, 11557, 11938, 12173, 13208, 13468, 13912, 14224, 17108, 18796, 22607, 23114, 23876, 24346, 26416, 26936, 27824, 32893, 34216, 37592, 41783, 45214, 46228, 47752, 48692, 53872, 61087, 65786, 68432, 75184, 77597, 83566, 90428, 92456, 95504, 97384, 122174, 131572, 155194, 158249, 167132, 180856, 184912, 194768, 220853, 244348, 263144, 310388, 316498, 334264, 361712, 427609, 441706, 488696, 526288, 543179, 620776, 632996, 668528, 855218, 883412, 977392, 1086358, 1241552, 1265992, 1545971, 1710436, 1766824, 2172716, 2531984, 2871089, 3091942, 3420872, 3533648, 4345432, 5742178, 6183884, 6841744, 8690864, 11484356, 12367768, 20097623, 22968712, 24735536, 40195246, 45937424, 80390492, 160780984, 321561968]

約数ペア:

[(1, 321561968), (2, 160780984), (4, 80390492), (7, 45937424), (8, 40195246), (13, 24735536), (14, 22968712), (16, 20097623), (26, 12367768), (28, 11484356), (37, 8690864), (47, 6841744), (52, 6183884), (56, 5742178), (74, 4345432), (91, 3533648), (94, 3420872), (104, 3091942), (112, 2871089), (127, 2531984), (148, 2172716), (182, 1766824), (188, 1710436), (208, 1545971), (254, 1265992), (259, 1241552), (296, 1086358), (329, 977392), (364, 883412), (376, 855218), (481, 668528), (508, 632996), (518, 620776), (592, 543179), (611, 526288), (658, 488696), (728, 441706), (752, 427609), (889, 361712), (962, 334264), (1016, 316498), (1036, 310388), (1222, 263144), (1316, 244348), (1456, 220853), (1651, 194768), (1739, 184912), (1778, 180856), (1924, 167132), (2032, 158249), (2072, 155194), (2444, 131572), (2632, 122174), (3302, 97384), (3367, 95504), (3478, 92456), (3556, 90428), (3848, 83566), (4144, 77597), (4277, 75184), (4699, 68432), (4888, 65786), (5264, 61087), (5969, 53872), (6604, 48692), (6734, 47752), (6956, 46228), (7112, 45214), (7696, 41783), (8554, 37592), (9398, 34216), (9776, 32893), (11557, 27824), (11938, 26936), (12173, 26416), (13208, 24346), (13468, 23876), (13912, 23114), (14224, 22607), (17108, 18796)]