28080720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:969

約数の個数: 120

約数和(自身を含む): 96603936

約数和(自身を除く): 68523216

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 43, 45, 48, 60, 72, 80, 86, 90, 120, 129, 144, 172, 180, 215, 240, 258, 344, 360, 387, 430, 516, 645, 688, 720, 774, 860, 907, 1032, 1290, 1548, 1720, 1814, 1935, 2064, 2580, 2721, 3096, 3440, 3628, 3870, 4535, 5160, 5442, 6192, 7256, 7740, 8163, 9070, 10320, 10884, 13605, 14512, 15480, 16326, 18140, 21768, 27210, 30960, 32652, 36280, 39001, 40815, 43536, 54420, 65304, 72560, 78002, 81630, 108840, 117003, 130608, 156004, 163260, 195005, 217680, 234006, 312008, 326520, 351009, 390010, 468012, 585015, 624016, 653040, 702018, 780020, 936024, 1170030, 1404036, 1560040, 1755045, 1872048, 2340060, 2808072, 3120080, 3510090, 4680120, 5616144, 7020180, 9360240, 14040360, 28080720]

約数ペア:

[(1, 28080720), (2, 14040360), (3, 9360240), (4, 7020180), (5, 5616144), (6, 4680120), (8, 3510090), (9, 3120080), (10, 2808072), (12, 2340060), (15, 1872048), (16, 1755045), (18, 1560040), (20, 1404036), (24, 1170030), (30, 936024), (36, 780020), (40, 702018), (43, 653040), (45, 624016), (48, 585015), (60, 468012), (72, 390010), (80, 351009), (86, 326520), (90, 312008), (120, 234006), (129, 217680), (144, 195005), (172, 163260), (180, 156004), (215, 130608), (240, 117003), (258, 108840), (344, 81630), (360, 78002), (387, 72560), (430, 65304), (516, 54420), (645, 43536), (688, 40815), (720, 39001), (774, 36280), (860, 32652), (907, 30960), (1032, 27210), (1290, 21768), (1548, 18140), (1720, 16326), (1814, 15480), (1935, 14512), (2064, 13605), (2580, 10884), (2721, 10320), (3096, 9070), (3440, 8163), (3628, 7740), (3870, 7256), (4535, 6192), (5160, 5442)]