261578304

素因数分解:

$2^6\times 3^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{193}}^1$

素因数の和:405

約数の個数: 168

約数和(自身を含む): 816109112

約数和(自身を除く): 554530808

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 64, 72, 78, 96, 104, 117, 144, 156, 181, 192, 193, 208, 234, 288, 312, 362, 386, 416, 468, 543, 576, 579, 624, 724, 772, 832, 936, 1086, 1158, 1248, 1448, 1544, 1629, 1737, 1872, 2172, 2316, 2353, 2496, 2509, 2896, 3088, 3258, 3474, 3744, 4344, 4632, 4706, 5018, 5792, 6176, 6516, 6948, 7059, 7488, 7527, 8688, 9264, 9412, 10036, 11584, 12352, 13032, 13896, 14118, 15054, 17376, 18528, 18824, 20072, 21177, 22581, 26064, 27792, 28236, 30108, 34752, 34933, 37056, 37648, 40144, 42354, 45162, 52128, 55584, 56472, 60216, 69866, 75296, 80288, 84708, 90324, 104256, 104799, 111168, 112944, 120432, 139732, 150592, 160576, 169416, 180648, 209598, 225888, 240864, 279464, 314397, 338832, 361296, 419196, 451776, 454129, 481728, 558928, 628794, 677664, 722592, 838392, 908258, 1117856, 1257588, 1355328, 1362387, 1445184, 1676784, 1816516, 2235712, 2515176, 2724774, 3353568, 3633032, 4087161, 5030352, 5449548, 6707136, 7266064, 8174322, 10060704, 10899096, 14532128, 16348644, 20121408, 21798192, 29064256, 32697288, 43596384, 65394576, 87192768, 130789152, 261578304]

約数ペア:

[(1, 261578304), (2, 130789152), (3, 87192768), (4, 65394576), (6, 43596384), (8, 32697288), (9, 29064256), (12, 21798192), (13, 20121408), (16, 16348644), (18, 14532128), (24, 10899096), (26, 10060704), (32, 8174322), (36, 7266064), (39, 6707136), (48, 5449548), (52, 5030352), (64, 4087161), (72, 3633032), (78, 3353568), (96, 2724774), (104, 2515176), (117, 2235712), (144, 1816516), (156, 1676784), (181, 1445184), (192, 1362387), (193, 1355328), (208, 1257588), (234, 1117856), (288, 908258), (312, 838392), (362, 722592), (386, 677664), (416, 628794), (468, 558928), (543, 481728), (576, 454129), (579, 451776), (624, 419196), (724, 361296), (772, 338832), (832, 314397), (936, 279464), (1086, 240864), (1158, 225888), (1248, 209598), (1448, 180648), (1544, 169416), (1629, 160576), (1737, 150592), (1872, 139732), (2172, 120432), (2316, 112944), (2353, 111168), (2496, 104799), (2509, 104256), (2896, 90324), (3088, 84708), (3258, 80288), (3474, 75296), (3744, 69866), (4344, 60216), (4632, 56472), (4706, 55584), (5018, 52128), (5792, 45162), (6176, 42354), (6516, 40144), (6948, 37648), (7059, 37056), (7488, 34933), (7527, 34752), (8688, 30108), (9264, 28236), (9412, 27792), (10036, 26064), (11584, 22581), (12352, 21177), (13032, 20072), (13896, 18824), (14118, 18528), (15054, 17376)]