81718728

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:148

約数の個数: 256

約数和(自身を含む): 278691840

約数和(自身を除く): 196973112

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 17, 21, 24, 26, 28, 31, 34, 39, 42, 51, 52, 56, 62, 68, 71, 78, 84, 91, 93, 102, 104, 119, 124, 136, 142, 156, 168, 182, 186, 204, 213, 217, 221, 238, 248, 273, 284, 312, 357, 364, 372, 403, 408, 426, 434, 442, 476, 497, 527, 546, 568, 651, 663, 714, 728, 744, 806, 852, 868, 884, 923, 952, 994, 1054, 1092, 1207, 1209, 1302, 1326, 1428, 1491, 1547, 1581, 1612, 1704, 1736, 1768, 1846, 1988, 2108, 2184, 2201, 2414, 2418, 2604, 2652, 2769, 2821, 2856, 2982, 3094, 3162, 3224, 3621, 3689, 3692, 3976, 4216, 4402, 4641, 4828, 4836, 5208, 5304, 5538, 5642, 5964, 6188, 6324, 6461, 6603, 6851, 7242, 7378, 7384, 8449, 8463, 8804, 9282, 9656, 9672, 11067, 11076, 11284, 11928, 12376, 12648, 12922, 13206, 13702, 14484, 14756, 15407, 15691, 16898, 16926, 17608, 18564, 19383, 20553, 22134, 22152, 22568, 25347, 25844, 26412, 27404, 28613, 28968, 29512, 30814, 31382, 33796, 33852, 37128, 37417, 38766, 41106, 44268, 46221, 47073, 47957, 50694, 51688, 52824, 54808, 57226, 61628, 62764, 67592, 67704, 74834, 77532, 82212, 85839, 88536, 92442, 94146, 95914, 101388, 109837, 112251, 114452, 123256, 125528, 143871, 149668, 155064, 164424, 171678, 184884, 188292, 191828, 200291, 202776, 219674, 224502, 228904, 261919, 287742, 299336, 329511, 343356, 369768, 376584, 383656, 400582, 439348, 449004, 486421, 523838, 575484, 600873, 659022, 686712, 785757, 801164, 878696, 898008, 972842, 1047676, 1150968, 1201746, 1318044, 1459263, 1571514, 1602328, 1945684, 2095352, 2403492, 2636088, 2918526, 3143028, 3404947, 3891368, 4806984, 5837052, 6286056, 6809894, 10214841, 11674104, 13619788, 20429682, 27239576, 40859364, 81718728]

約数ペア:

[(1, 81718728), (2, 40859364), (3, 27239576), (4, 20429682), (6, 13619788), (7, 11674104), (8, 10214841), (12, 6809894), (13, 6286056), (14, 5837052), (17, 4806984), (21, 3891368), (24, 3404947), (26, 3143028), (28, 2918526), (31, 2636088), (34, 2403492), (39, 2095352), (42, 1945684), (51, 1602328), (52, 1571514), (56, 1459263), (62, 1318044), (68, 1201746), (71, 1150968), (78, 1047676), (84, 972842), (91, 898008), (93, 878696), (102, 801164), (104, 785757), (119, 686712), (124, 659022), (136, 600873), (142, 575484), (156, 523838), (168, 486421), (182, 449004), (186, 439348), (204, 400582), (213, 383656), (217, 376584), (221, 369768), (238, 343356), (248, 329511), (273, 299336), (284, 287742), (312, 261919), (357, 228904), (364, 224502), (372, 219674), (403, 202776), (408, 200291), (426, 191828), (434, 188292), (442, 184884), (476, 171678), (497, 164424), (527, 155064), (546, 149668), (568, 143871), (651, 125528), (663, 123256), (714, 114452), (728, 112251), (744, 109837), (806, 101388), (852, 95914), (868, 94146), (884, 92442), (923, 88536), (952, 85839), (994, 82212), (1054, 77532), (1092, 74834), (1207, 67704), (1209, 67592), (1302, 62764), (1326, 61628), (1428, 57226), (1491, 54808), (1547, 52824), (1581, 51688), (1612, 50694), (1704, 47957), (1736, 47073), (1768, 46221), (1846, 44268), (1988, 41106), (2108, 38766), (2184, 37417), (2201, 37128), (2414, 33852), (2418, 33796), (2604, 31382), (2652, 30814), (2769, 29512), (2821, 28968), (2856, 28613), (2982, 27404), (3094, 26412), (3162, 25844), (3224, 25347), (3621, 22568), (3689, 22152), (3692, 22134), (3976, 20553), (4216, 19383), (4402, 18564), (4641, 17608), (4828, 16926), (4836, 16898), (5208, 15691), (5304, 15407), (5538, 14756), (5642, 14484), (5964, 13702), (6188, 13206), (6324, 12922), (6461, 12648), (6603, 12376), (6851, 11928), (7242, 11284), (7378, 11076), (7384, 11067), (8449, 9672), (8463, 9656), (8804, 9282)]