81331920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:170

約数の個数: 240

約数和(自身を含む): 291088512

約数和(自身を除く): 209756592

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 37, 40, 43, 45, 48, 60, 71, 72, 74, 80, 86, 90, 111, 120, 129, 142, 144, 148, 172, 180, 185, 213, 215, 222, 240, 258, 284, 296, 333, 344, 355, 360, 370, 387, 426, 430, 444, 516, 555, 568, 592, 639, 645, 666, 688, 710, 720, 740, 774, 852, 860, 888, 1032, 1065, 1110, 1136, 1278, 1290, 1332, 1420, 1480, 1548, 1591, 1665, 1704, 1720, 1776, 1935, 2064, 2130, 2220, 2556, 2580, 2627, 2664, 2840, 2960, 3053, 3096, 3182, 3195, 3330, 3408, 3440, 3870, 4260, 4440, 4773, 5112, 5160, 5254, 5328, 5680, 6106, 6192, 6364, 6390, 6660, 7740, 7881, 7955, 8520, 8880, 9159, 9546, 10224, 10320, 10508, 12212, 12728, 12780, 13135, 13320, 14319, 15265, 15480, 15762, 15910, 17040, 18318, 19092, 21016, 23643, 23865, 24424, 25456, 25560, 26270, 26640, 27477, 28638, 30530, 30960, 31524, 31820, 36636, 38184, 39405, 42032, 45795, 47286, 47730, 48848, 51120, 52540, 54954, 57276, 61060, 63048, 63640, 71595, 73272, 76368, 78810, 91590, 94572, 95460, 105080, 109908, 112961, 114552, 118215, 122120, 126096, 127280, 137385, 143190, 146544, 157620, 183180, 189144, 190920, 210160, 219816, 225922, 229104, 236430, 244240, 274770, 286380, 315240, 338883, 366360, 378288, 381840, 439632, 451844, 472860, 549540, 564805, 572760, 630480, 677766, 732720, 903688, 945720, 1016649, 1099080, 1129610, 1145520, 1355532, 1694415, 1807376, 1891440, 2033298, 2198160, 2259220, 2711064, 3388830, 4066596, 4518440, 5083245, 5422128, 6777660, 8133192, 9036880, 10166490, 13555320, 16266384, 20332980, 27110640, 40665960, 81331920]

約数ペア:

[(1, 81331920), (2, 40665960), (3, 27110640), (4, 20332980), (5, 16266384), (6, 13555320), (8, 10166490), (9, 9036880), (10, 8133192), (12, 6777660), (15, 5422128), (16, 5083245), (18, 4518440), (20, 4066596), (24, 3388830), (30, 2711064), (36, 2259220), (37, 2198160), (40, 2033298), (43, 1891440), (45, 1807376), (48, 1694415), (60, 1355532), (71, 1145520), (72, 1129610), (74, 1099080), (80, 1016649), (86, 945720), (90, 903688), (111, 732720), (120, 677766), (129, 630480), (142, 572760), (144, 564805), (148, 549540), (172, 472860), (180, 451844), (185, 439632), (213, 381840), (215, 378288), (222, 366360), (240, 338883), (258, 315240), (284, 286380), (296, 274770), (333, 244240), (344, 236430), (355, 229104), (360, 225922), (370, 219816), (387, 210160), (426, 190920), (430, 189144), (444, 183180), (516, 157620), (555, 146544), (568, 143190), (592, 137385), (639, 127280), (645, 126096), (666, 122120), (688, 118215), (710, 114552), (720, 112961), (740, 109908), (774, 105080), (852, 95460), (860, 94572), (888, 91590), (1032, 78810), (1065, 76368), (1110, 73272), (1136, 71595), (1278, 63640), (1290, 63048), (1332, 61060), (1420, 57276), (1480, 54954), (1548, 52540), (1591, 51120), (1665, 48848), (1704, 47730), (1720, 47286), (1776, 45795), (1935, 42032), (2064, 39405), (2130, 38184), (2220, 36636), (2556, 31820), (2580, 31524), (2627, 30960), (2664, 30530), (2840, 28638), (2960, 27477), (3053, 26640), (3096, 26270), (3182, 25560), (3195, 25456), (3330, 24424), (3408, 23865), (3440, 23643), (3870, 21016), (4260, 19092), (4440, 18318), (4773, 17040), (5112, 15910), (5160, 15762), (5254, 15480), (5328, 15265), (5680, 14319), (6106, 13320), (6192, 13135), (6364, 12780), (6390, 12728), (6660, 12212), (7740, 10508), (7881, 10320), (7955, 10224), (8520, 9546), (8880, 9159)]