28805920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1259}}^1$

素因数の和:1298

約数の個数: 96

約数和(自身を含む): 80015040

約数和(自身を除く): 51209120

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 352, 416, 440, 520, 572, 715, 880, 1040, 1144, 1259, 1430, 1760, 2080, 2288, 2518, 2860, 4576, 5036, 5720, 6295, 10072, 11440, 12590, 13849, 16367, 20144, 22880, 25180, 27698, 32734, 40288, 50360, 55396, 65468, 69245, 81835, 100720, 110792, 130936, 138490, 163670, 180037, 201440, 221584, 261872, 276980, 327340, 360074, 443168, 523744, 553960, 654680, 720148, 900185, 1107920, 1309360, 1440296, 1800370, 2215840, 2618720, 2880592, 3600740, 5761184, 7201480, 14402960, 28805920]

約数ペア:

[(1, 28805920), (2, 14402960), (4, 7201480), (5, 5761184), (8, 3600740), (10, 2880592), (11, 2618720), (13, 2215840), (16, 1800370), (20, 1440296), (22, 1309360), (26, 1107920), (32, 900185), (40, 720148), (44, 654680), (52, 553960), (55, 523744), (65, 443168), (80, 360074), (88, 327340), (104, 276980), (110, 261872), (130, 221584), (143, 201440), (160, 180037), (176, 163670), (208, 138490), (220, 130936), (260, 110792), (286, 100720), (352, 81835), (416, 69245), (440, 65468), (520, 55396), (572, 50360), (715, 40288), (880, 32734), (1040, 27698), (1144, 25180), (1259, 22880), (1430, 20144), (1760, 16367), (2080, 13849), (2288, 12590), (2518, 11440), (2860, 10072), (4576, 6295), (5036, 5720)]