18720480

素因数分解:

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

素因数の和:968

約数の個数: 96

約数和(自身を含む): 60407424

約数和(自身を除く): 41686944

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 43, 48, 60, 80, 86, 96, 120, 129, 160, 172, 215, 240, 258, 344, 430, 480, 516, 645, 688, 860, 907, 1032, 1290, 1376, 1720, 1814, 2064, 2580, 2721, 3440, 3628, 4128, 4535, 5160, 5442, 6880, 7256, 9070, 10320, 10884, 13605, 14512, 18140, 20640, 21768, 27210, 29024, 36280, 39001, 43536, 54420, 72560, 78002, 87072, 108840, 117003, 145120, 156004, 195005, 217680, 234006, 312008, 390010, 435360, 468012, 585015, 624016, 780020, 936024, 1170030, 1248032, 1560040, 1872048, 2340060, 3120080, 3744096, 4680120, 6240160, 9360240, 18720480]

約数ペア:

[(1, 18720480), (2, 9360240), (3, 6240160), (4, 4680120), (5, 3744096), (6, 3120080), (8, 2340060), (10, 1872048), (12, 1560040), (15, 1248032), (16, 1170030), (20, 936024), (24, 780020), (30, 624016), (32, 585015), (40, 468012), (43, 435360), (48, 390010), (60, 312008), (80, 234006), (86, 217680), (96, 195005), (120, 156004), (129, 145120), (160, 117003), (172, 108840), (215, 87072), (240, 78002), (258, 72560), (344, 54420), (430, 43536), (480, 39001), (516, 36280), (645, 29024), (688, 27210), (860, 21768), (907, 20640), (1032, 18140), (1290, 14512), (1376, 13605), (1720, 10884), (1814, 10320), (2064, 9070), (2580, 7256), (2721, 6880), (3440, 5442), (3628, 5160), (4128, 4535)]