81821880

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:243

約数の個数: 256

約数和(自身を含む): 317952000

約数和(自身を除く): 236130120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 79, 84, 90, 105, 108, 120, 126, 135, 137, 140, 158, 168, 180, 189, 210, 216, 237, 252, 270, 274, 280, 315, 316, 360, 378, 395, 411, 420, 474, 504, 540, 548, 553, 630, 632, 685, 711, 756, 790, 822, 840, 945, 948, 959, 1080, 1096, 1106, 1185, 1233, 1260, 1370, 1422, 1512, 1580, 1644, 1659, 1890, 1896, 1918, 2055, 2133, 2212, 2370, 2466, 2520, 2740, 2765, 2844, 2877, 3160, 3288, 3318, 3555, 3699, 3780, 3836, 4110, 4266, 4424, 4740, 4795, 4932, 4977, 5480, 5530, 5688, 5754, 6165, 6636, 7110, 7398, 7560, 7672, 8220, 8295, 8532, 8631, 9480, 9590, 9864, 9954, 10665, 10823, 11060, 11508, 12330, 13272, 14220, 14385, 14796, 14931, 16440, 16590, 17064, 17262, 18495, 19180, 19908, 21330, 21646, 22120, 23016, 24660, 24885, 25893, 28440, 28770, 29592, 29862, 32469, 33180, 34524, 36990, 38360, 39816, 42660, 43155, 43292, 49320, 49770, 51786, 54115, 57540, 59724, 64938, 66360, 69048, 73980, 74655, 75761, 85320, 86310, 86584, 97407, 99540, 103572, 108230, 115080, 119448, 129465, 129876, 147960, 149310, 151522, 162345, 172620, 194814, 199080, 207144, 216460, 227283, 258930, 259752, 292221, 298620, 303044, 324690, 345240, 378805, 389628, 432920, 454566, 487035, 517860, 584442, 597240, 606088, 649380, 681849, 757610, 779256, 909132, 974070, 1035720, 1136415, 1168884, 1298760, 1363698, 1461105, 1515220, 1818264, 1948140, 2045547, 2272830, 2337768, 2727396, 2922210, 3030440, 3409245, 3896280, 4091094, 4545660, 5454792, 5844420, 6818490, 8182188, 9091320, 10227735, 11688840, 13636980, 16364376, 20455470, 27273960, 40910940, 81821880]

約数ペア:

[(1, 81821880), (2, 40910940), (3, 27273960), (4, 20455470), (5, 16364376), (6, 13636980), (7, 11688840), (8, 10227735), (9, 9091320), (10, 8182188), (12, 6818490), (14, 5844420), (15, 5454792), (18, 4545660), (20, 4091094), (21, 3896280), (24, 3409245), (27, 3030440), (28, 2922210), (30, 2727396), (35, 2337768), (36, 2272830), (40, 2045547), (42, 1948140), (45, 1818264), (54, 1515220), (56, 1461105), (60, 1363698), (63, 1298760), (70, 1168884), (72, 1136415), (79, 1035720), (84, 974070), (90, 909132), (105, 779256), (108, 757610), (120, 681849), (126, 649380), (135, 606088), (137, 597240), (140, 584442), (158, 517860), (168, 487035), (180, 454566), (189, 432920), (210, 389628), (216, 378805), (237, 345240), (252, 324690), (270, 303044), (274, 298620), (280, 292221), (315, 259752), (316, 258930), (360, 227283), (378, 216460), (395, 207144), (411, 199080), (420, 194814), (474, 172620), (504, 162345), (540, 151522), (548, 149310), (553, 147960), (630, 129876), (632, 129465), (685, 119448), (711, 115080), (756, 108230), (790, 103572), (822, 99540), (840, 97407), (945, 86584), (948, 86310), (959, 85320), (1080, 75761), (1096, 74655), (1106, 73980), (1185, 69048), (1233, 66360), (1260, 64938), (1370, 59724), (1422, 57540), (1512, 54115), (1580, 51786), (1644, 49770), (1659, 49320), (1890, 43292), (1896, 43155), (1918, 42660), (2055, 39816), (2133, 38360), (2212, 36990), (2370, 34524), (2466, 33180), (2520, 32469), (2740, 29862), (2765, 29592), (2844, 28770), (2877, 28440), (3160, 25893), (3288, 24885), (3318, 24660), (3555, 23016), (3699, 22120), (3780, 21646), (3836, 21330), (4110, 19908), (4266, 19180), (4424, 18495), (4740, 17262), (4795, 17064), (4932, 16590), (4977, 16440), (5480, 14931), (5530, 14796), (5688, 14385), (5754, 14220), (6165, 13272), (6636, 12330), (7110, 11508), (7398, 11060), (7560, 10823), (7672, 10665), (8220, 9954), (8295, 9864), (8532, 9590), (8631, 9480)]