81386760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:320

約数の個数: 256

約数和(自身を含む): 312076800

約数和(自身を除く): 230690040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 29, 30, 35, 39, 40, 42, 52, 56, 58, 60, 65, 70, 78, 84, 87, 91, 104, 105, 116, 120, 130, 140, 145, 156, 168, 174, 182, 195, 203, 210, 232, 257, 260, 273, 280, 290, 312, 348, 364, 377, 390, 406, 420, 435, 455, 514, 520, 546, 580, 609, 696, 728, 754, 771, 780, 812, 840, 870, 910, 1015, 1028, 1092, 1131, 1160, 1218, 1285, 1365, 1508, 1542, 1560, 1624, 1740, 1799, 1820, 1885, 2030, 2056, 2184, 2262, 2436, 2570, 2639, 2730, 3016, 3045, 3084, 3341, 3480, 3598, 3640, 3770, 3855, 4060, 4524, 4872, 5140, 5278, 5397, 5460, 5655, 6090, 6168, 6682, 7196, 7453, 7540, 7710, 7917, 8120, 8995, 9048, 10023, 10280, 10556, 10794, 10920, 11310, 12180, 13195, 13364, 14392, 14906, 15080, 15420, 15834, 16705, 17990, 20046, 21112, 21588, 22359, 22620, 23387, 24360, 26390, 26728, 26985, 29812, 30840, 31668, 33410, 35980, 37265, 39585, 40092, 43176, 44718, 45240, 46774, 50115, 52171, 52780, 53970, 59624, 63336, 66820, 70161, 71960, 74530, 79170, 80184, 89436, 93548, 96889, 100230, 104342, 105560, 107940, 111795, 116935, 133640, 140322, 149060, 156513, 158340, 178872, 187096, 193778, 200460, 208684, 215880, 223590, 233870, 260855, 280644, 290667, 298120, 313026, 316680, 350805, 387556, 400920, 417368, 447180, 467740, 484445, 521710, 561288, 581334, 626052, 678223, 701610, 775112, 782565, 894360, 935480, 968890, 1043420, 1162668, 1252104, 1356446, 1403220, 1453335, 1565130, 1937780, 2034669, 2086840, 2325336, 2712892, 2806440, 2906670, 3130260, 3391115, 3875560, 4069338, 5425784, 5813340, 6260520, 6782230, 8138676, 10173345, 11626680, 13564460, 16277352, 20346690, 27128920, 40693380, 81386760]

約数ペア:

[(1, 81386760), (2, 40693380), (3, 27128920), (4, 20346690), (5, 16277352), (6, 13564460), (7, 11626680), (8, 10173345), (10, 8138676), (12, 6782230), (13, 6260520), (14, 5813340), (15, 5425784), (20, 4069338), (21, 3875560), (24, 3391115), (26, 3130260), (28, 2906670), (29, 2806440), (30, 2712892), (35, 2325336), (39, 2086840), (40, 2034669), (42, 1937780), (52, 1565130), (56, 1453335), (58, 1403220), (60, 1356446), (65, 1252104), (70, 1162668), (78, 1043420), (84, 968890), (87, 935480), (91, 894360), (104, 782565), (105, 775112), (116, 701610), (120, 678223), (130, 626052), (140, 581334), (145, 561288), (156, 521710), (168, 484445), (174, 467740), (182, 447180), (195, 417368), (203, 400920), (210, 387556), (232, 350805), (257, 316680), (260, 313026), (273, 298120), (280, 290667), (290, 280644), (312, 260855), (348, 233870), (364, 223590), (377, 215880), (390, 208684), (406, 200460), (420, 193778), (435, 187096), (455, 178872), (514, 158340), (520, 156513), (546, 149060), (580, 140322), (609, 133640), (696, 116935), (728, 111795), (754, 107940), (771, 105560), (780, 104342), (812, 100230), (840, 96889), (870, 93548), (910, 89436), (1015, 80184), (1028, 79170), (1092, 74530), (1131, 71960), (1160, 70161), (1218, 66820), (1285, 63336), (1365, 59624), (1508, 53970), (1542, 52780), (1560, 52171), (1624, 50115), (1740, 46774), (1799, 45240), (1820, 44718), (1885, 43176), (2030, 40092), (2056, 39585), (2184, 37265), (2262, 35980), (2436, 33410), (2570, 31668), (2639, 30840), (2730, 29812), (3016, 26985), (3045, 26728), (3084, 26390), (3341, 24360), (3480, 23387), (3598, 22620), (3640, 22359), (3770, 21588), (3855, 21112), (4060, 20046), (4524, 17990), (4872, 16705), (5140, 15834), (5278, 15420), (5397, 15080), (5460, 14906), (5655, 14392), (6090, 13364), (6168, 13195), (6682, 12180), (7196, 11310), (7453, 10920), (7540, 10794), (7710, 10556), (7917, 10280), (8120, 10023), (8995, 9048)]