81073920

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:558

約数の個数: 144

約数和(自身を含む): 265491072

約数和(自身を除く): 184417152

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 43, 48, 60, 64, 80, 86, 96, 120, 128, 129, 160, 172, 192, 215, 240, 256, 258, 320, 344, 384, 430, 480, 491, 516, 640, 645, 688, 768, 860, 960, 982, 1032, 1280, 1290, 1376, 1473, 1720, 1920, 1964, 2064, 2455, 2580, 2752, 2946, 3440, 3840, 3928, 4128, 4910, 5160, 5504, 5892, 6880, 7365, 7856, 8256, 9820, 10320, 11008, 11784, 13760, 14730, 15712, 16512, 19640, 20640, 21113, 23568, 27520, 29460, 31424, 33024, 39280, 41280, 42226, 47136, 55040, 58920, 62848, 63339, 78560, 82560, 84452, 94272, 105565, 117840, 125696, 126678, 157120, 165120, 168904, 188544, 211130, 235680, 253356, 314240, 316695, 337808, 377088, 422260, 471360, 506712, 628480, 633390, 675616, 844520, 942720, 1013424, 1266780, 1351232, 1689040, 1885440, 2026848, 2533560, 2702464, 3378080, 4053696, 5067120, 5404928, 6756160, 8107392, 10134240, 13512320, 16214784, 20268480, 27024640, 40536960, 81073920]

約数ペア:

[(1, 81073920), (2, 40536960), (3, 27024640), (4, 20268480), (5, 16214784), (6, 13512320), (8, 10134240), (10, 8107392), (12, 6756160), (15, 5404928), (16, 5067120), (20, 4053696), (24, 3378080), (30, 2702464), (32, 2533560), (40, 2026848), (43, 1885440), (48, 1689040), (60, 1351232), (64, 1266780), (80, 1013424), (86, 942720), (96, 844520), (120, 675616), (128, 633390), (129, 628480), (160, 506712), (172, 471360), (192, 422260), (215, 377088), (240, 337808), (256, 316695), (258, 314240), (320, 253356), (344, 235680), (384, 211130), (430, 188544), (480, 168904), (491, 165120), (516, 157120), (640, 126678), (645, 125696), (688, 117840), (768, 105565), (860, 94272), (960, 84452), (982, 82560), (1032, 78560), (1280, 63339), (1290, 62848), (1376, 58920), (1473, 55040), (1720, 47136), (1920, 42226), (1964, 41280), (2064, 39280), (2455, 33024), (2580, 31424), (2752, 29460), (2946, 27520), (3440, 23568), (3840, 21113), (3928, 20640), (4128, 19640), (4910, 16512), (5160, 15712), (5504, 14730), (5892, 13760), (6880, 11784), (7365, 11008), (7856, 10320), (8256, 9820)]