81276160

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:268

約数の個数: 144

約数和(自身を含む): 228404736

約数和(自身を除く): 147128576

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 56, 64, 70, 80, 94, 112, 128, 140, 160, 188, 193, 224, 235, 256, 280, 320, 329, 376, 386, 448, 470, 560, 640, 658, 752, 772, 896, 940, 965, 1120, 1280, 1316, 1351, 1504, 1544, 1645, 1792, 1880, 1930, 2240, 2632, 2702, 3008, 3088, 3290, 3760, 3860, 4480, 5264, 5404, 6016, 6176, 6580, 6755, 7520, 7720, 8960, 9071, 10528, 10808, 12032, 12352, 13160, 13510, 15040, 15440, 18142, 21056, 21616, 24704, 26320, 27020, 30080, 30880, 36284, 42112, 43232, 45355, 49408, 52640, 54040, 60160, 61760, 63497, 72568, 84224, 86464, 90710, 105280, 108080, 123520, 126994, 145136, 172928, 181420, 210560, 216160, 247040, 253988, 290272, 317485, 345856, 362840, 421120, 432320, 507976, 580544, 634970, 725680, 864640, 1015952, 1161088, 1269940, 1451360, 1729280, 2031904, 2322176, 2539880, 2902720, 4063808, 5079760, 5805440, 8127616, 10159520, 11610880, 16255232, 20319040, 40638080, 81276160]

約数ペア:

[(1, 81276160), (2, 40638080), (4, 20319040), (5, 16255232), (7, 11610880), (8, 10159520), (10, 8127616), (14, 5805440), (16, 5079760), (20, 4063808), (28, 2902720), (32, 2539880), (35, 2322176), (40, 2031904), (47, 1729280), (56, 1451360), (64, 1269940), (70, 1161088), (80, 1015952), (94, 864640), (112, 725680), (128, 634970), (140, 580544), (160, 507976), (188, 432320), (193, 421120), (224, 362840), (235, 345856), (256, 317485), (280, 290272), (320, 253988), (329, 247040), (376, 216160), (386, 210560), (448, 181420), (470, 172928), (560, 145136), (640, 126994), (658, 123520), (752, 108080), (772, 105280), (896, 90710), (940, 86464), (965, 84224), (1120, 72568), (1280, 63497), (1316, 61760), (1351, 60160), (1504, 54040), (1544, 52640), (1645, 49408), (1792, 45355), (1880, 43232), (1930, 42112), (2240, 36284), (2632, 30880), (2702, 30080), (3008, 27020), (3088, 26320), (3290, 24704), (3760, 21616), (3860, 21056), (4480, 18142), (5264, 15440), (5404, 15040), (6016, 13510), (6176, 13160), (6580, 12352), (6755, 12032), (7520, 10808), (7720, 10528), (8960, 9071)]