261313920

素因数分解:

$2^7\times 3^2\times 5^1\times 7^1\times {\mathrm{6481}}^1$

素因数の和:6513

約数の個数: 192

約数和(自身を含む): 1031415840

約数和(自身を除く): 770101920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 672, 720, 840, 896, 960, 1008, 1120, 1152, 1260, 1344, 1440, 1680, 1920, 2016, 2240, 2520, 2688, 2880, 3360, 4032, 4480, 5040, 5760, 6481, 6720, 8064, 10080, 12962, 13440, 19443, 20160, 25924, 32405, 38886, 40320, 45367, 51848, 58329, 64810, 77772, 90734, 97215, 103696, 116658, 129620, 136101, 155544, 181468, 194430, 207392, 226835, 233316, 259240, 272202, 291645, 311088, 362936, 388860, 408303, 414784, 453670, 466632, 518480, 544404, 583290, 622176, 680505, 725872, 777720, 816606, 829568, 907340, 933264, 1036960, 1088808, 1166580, 1244352, 1361010, 1451744, 1555440, 1633212, 1814680, 1866528, 2041515, 2073920, 2177616, 2333160, 2488704, 2722020, 2903488, 3110880, 3266424, 3629360, 3733056, 4083030, 4147840, 4355232, 4666320, 5444040, 5806976, 6221760, 6532848, 7258720, 7466112, 8166060, 8710464, 9332640, 10888080, 12443520, 13065696, 14517440, 16332120, 17420928, 18665280, 21776160, 26131392, 29034880, 32664240, 37330560, 43552320, 52262784, 65328480, 87104640, 130656960, 261313920]

約数ペア:

[(1, 261313920), (2, 130656960), (3, 87104640), (4, 65328480), (5, 52262784), (6, 43552320), (7, 37330560), (8, 32664240), (9, 29034880), (10, 26131392), (12, 21776160), (14, 18665280), (15, 17420928), (16, 16332120), (18, 14517440), (20, 13065696), (21, 12443520), (24, 10888080), (28, 9332640), (30, 8710464), (32, 8166060), (35, 7466112), (36, 7258720), (40, 6532848), (42, 6221760), (45, 5806976), (48, 5444040), (56, 4666320), (60, 4355232), (63, 4147840), (64, 4083030), (70, 3733056), (72, 3629360), (80, 3266424), (84, 3110880), (90, 2903488), (96, 2722020), (105, 2488704), (112, 2333160), (120, 2177616), (126, 2073920), (128, 2041515), (140, 1866528), (144, 1814680), (160, 1633212), (168, 1555440), (180, 1451744), (192, 1361010), (210, 1244352), (224, 1166580), (240, 1088808), (252, 1036960), (280, 933264), (288, 907340), (315, 829568), (320, 816606), (336, 777720), (360, 725872), (384, 680505), (420, 622176), (448, 583290), (480, 544404), (504, 518480), (560, 466632), (576, 453670), (630, 414784), (640, 408303), (672, 388860), (720, 362936), (840, 311088), (896, 291645), (960, 272202), (1008, 259240), (1120, 233316), (1152, 226835), (1260, 207392), (1344, 194430), (1440, 181468), (1680, 155544), (1920, 136101), (2016, 129620), (2240, 116658), (2520, 103696), (2688, 97215), (2880, 90734), (3360, 77772), (4032, 64810), (4480, 58329), (5040, 51848), (5760, 45367), (6481, 40320), (6720, 38886), (8064, 32405), (10080, 25924), (12962, 20160), (13440, 19443)]