81131040

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{547}}^1$

素因数の和:671

約数の個数: 144

約数和(自身を含む): 280058688

約数和(自身を除く): 198927648

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 103, 120, 144, 160, 180, 206, 240, 288, 309, 360, 412, 480, 515, 547, 618, 720, 824, 927, 1030, 1094, 1236, 1440, 1545, 1641, 1648, 1854, 2060, 2188, 2472, 2735, 3090, 3282, 3296, 3708, 4120, 4376, 4635, 4923, 4944, 5470, 6180, 6564, 7416, 8205, 8240, 8752, 9270, 9846, 9888, 10940, 12360, 13128, 14832, 16410, 16480, 17504, 18540, 19692, 21880, 24615, 24720, 26256, 29664, 32820, 37080, 39384, 43760, 49230, 49440, 52512, 56341, 65640, 74160, 78768, 87520, 98460, 112682, 131280, 148320, 157536, 169023, 196920, 225364, 262560, 281705, 338046, 393840, 450728, 507069, 563410, 676092, 787680, 845115, 901456, 1014138, 1126820, 1352184, 1690230, 1802912, 2028276, 2253640, 2535345, 2704368, 3380460, 4056552, 4507280, 5070690, 5408736, 6760920, 8113104, 9014560, 10141380, 13521840, 16226208, 20282760, 27043680, 40565520, 81131040]

約数ペア:

[(1, 81131040), (2, 40565520), (3, 27043680), (4, 20282760), (5, 16226208), (6, 13521840), (8, 10141380), (9, 9014560), (10, 8113104), (12, 6760920), (15, 5408736), (16, 5070690), (18, 4507280), (20, 4056552), (24, 3380460), (30, 2704368), (32, 2535345), (36, 2253640), (40, 2028276), (45, 1802912), (48, 1690230), (60, 1352184), (72, 1126820), (80, 1014138), (90, 901456), (96, 845115), (103, 787680), (120, 676092), (144, 563410), (160, 507069), (180, 450728), (206, 393840), (240, 338046), (288, 281705), (309, 262560), (360, 225364), (412, 196920), (480, 169023), (515, 157536), (547, 148320), (618, 131280), (720, 112682), (824, 98460), (927, 87520), (1030, 78768), (1094, 74160), (1236, 65640), (1440, 56341), (1545, 52512), (1641, 49440), (1648, 49230), (1854, 43760), (2060, 39384), (2188, 37080), (2472, 32820), (2735, 29664), (3090, 26256), (3282, 24720), (3296, 24615), (3708, 21880), (4120, 19692), (4376, 18540), (4635, 17504), (4923, 16480), (4944, 16410), (5470, 14832), (6180, 13128), (6564, 12360), (7416, 10940), (8205, 9888), (8240, 9846), (8752, 9270)]