405671680

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:322

約数の個数: 144

約数和(自身を含む): 1044598464

約数和(自身を除く): 638926784

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 103, 128, 136, 160, 170, 181, 206, 256, 272, 320, 340, 362, 412, 515, 544, 640, 680, 724, 824, 905, 1030, 1088, 1280, 1360, 1448, 1648, 1751, 1810, 2060, 2176, 2720, 2896, 3077, 3296, 3502, 3620, 4120, 4352, 5440, 5792, 6154, 6592, 7004, 7240, 8240, 8755, 10880, 11584, 12308, 13184, 14008, 14480, 15385, 16480, 17510, 18643, 21760, 23168, 24616, 26368, 28016, 28960, 30770, 32960, 35020, 37286, 46336, 49232, 56032, 57920, 61540, 65920, 70040, 74572, 93215, 98464, 112064, 115840, 123080, 131840, 140080, 149144, 186430, 196928, 224128, 231680, 246160, 280160, 298288, 316931, 372860, 393856, 448256, 492320, 560320, 596576, 633862, 745720, 787712, 984640, 1120640, 1193152, 1267724, 1491440, 1584655, 1969280, 2241280, 2386304, 2535448, 2982880, 3169310, 3938560, 4772608, 5070896, 5965760, 6338620, 10141792, 11931520, 12677240, 20283584, 23863040, 25354480, 40567168, 50708960, 81134336, 101417920, 202835840, 405671680]

約数ペア:

[(1, 405671680), (2, 202835840), (4, 101417920), (5, 81134336), (8, 50708960), (10, 40567168), (16, 25354480), (17, 23863040), (20, 20283584), (32, 12677240), (34, 11931520), (40, 10141792), (64, 6338620), (68, 5965760), (80, 5070896), (85, 4772608), (103, 3938560), (128, 3169310), (136, 2982880), (160, 2535448), (170, 2386304), (181, 2241280), (206, 1969280), (256, 1584655), (272, 1491440), (320, 1267724), (340, 1193152), (362, 1120640), (412, 984640), (515, 787712), (544, 745720), (640, 633862), (680, 596576), (724, 560320), (824, 492320), (905, 448256), (1030, 393856), (1088, 372860), (1280, 316931), (1360, 298288), (1448, 280160), (1648, 246160), (1751, 231680), (1810, 224128), (2060, 196928), (2176, 186430), (2720, 149144), (2896, 140080), (3077, 131840), (3296, 123080), (3502, 115840), (3620, 112064), (4120, 98464), (4352, 93215), (5440, 74572), (5792, 70040), (6154, 65920), (6592, 61540), (7004, 57920), (7240, 56032), (8240, 49232), (8755, 46336), (10880, 37286), (11584, 35020), (12308, 32960), (13184, 30770), (14008, 28960), (14480, 28016), (15385, 26368), (16480, 24616), (17510, 23168), (18643, 21760)]