81528720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3733}}^1$

素因数の和:3769

約数の個数: 160

約数和(自身を含む): 311146752

約数和(自身を除く): 229618032

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 2184, 2730, 3120, 3640, 3733, 4368, 5460, 7280, 7466, 10920, 11199, 14932, 18665, 21840, 22398, 26131, 29864, 37330, 44796, 48529, 52262, 55995, 59728, 74660, 78393, 89592, 97058, 104524, 111990, 130655, 145587, 149320, 156786, 179184, 194116, 209048, 223980, 242645, 261310, 291174, 298640, 313572, 339703, 388232, 391965, 418096, 447960, 485290, 522620, 582348, 627144, 679406, 727935, 776464, 783930, 895920, 970580, 1019109, 1045240, 1164696, 1254288, 1358812, 1455870, 1567860, 1698515, 1941160, 2038218, 2090480, 2329392, 2717624, 2911740, 3135720, 3397030, 3882320, 4076436, 5095545, 5435248, 5823480, 6271440, 6794060, 8152872, 10191090, 11646960, 13588120, 16305744, 20382180, 27176240, 40764360, 81528720]

約数ペア:

[(1, 81528720), (2, 40764360), (3, 27176240), (4, 20382180), (5, 16305744), (6, 13588120), (7, 11646960), (8, 10191090), (10, 8152872), (12, 6794060), (13, 6271440), (14, 5823480), (15, 5435248), (16, 5095545), (20, 4076436), (21, 3882320), (24, 3397030), (26, 3135720), (28, 2911740), (30, 2717624), (35, 2329392), (39, 2090480), (40, 2038218), (42, 1941160), (48, 1698515), (52, 1567860), (56, 1455870), (60, 1358812), (65, 1254288), (70, 1164696), (78, 1045240), (80, 1019109), (84, 970580), (91, 895920), (104, 783930), (105, 776464), (112, 727935), (120, 679406), (130, 627144), (140, 582348), (156, 522620), (168, 485290), (182, 447960), (195, 418096), (208, 391965), (210, 388232), (240, 339703), (260, 313572), (273, 298640), (280, 291174), (312, 261310), (336, 242645), (364, 223980), (390, 209048), (420, 194116), (455, 179184), (520, 156786), (546, 149320), (560, 145587), (624, 130655), (728, 111990), (780, 104524), (840, 97058), (910, 89592), (1040, 78393), (1092, 74660), (1365, 59728), (1456, 55995), (1560, 52262), (1680, 48529), (1820, 44796), (2184, 37330), (2730, 29864), (3120, 26131), (3640, 22398), (3733, 21840), (4368, 18665), (5460, 14932), (7280, 11199), (7466, 10920)]