81392080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:285

約数の個数: 160

約数和(自身を含む): 240484608

約数和(自身を除く): 159092528

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 73, 77, 80, 88, 110, 112, 140, 146, 154, 176, 181, 220, 280, 292, 308, 362, 365, 385, 440, 511, 560, 584, 616, 724, 730, 770, 803, 880, 905, 1022, 1168, 1232, 1267, 1448, 1460, 1540, 1606, 1810, 1991, 2044, 2534, 2555, 2896, 2920, 3080, 3212, 3620, 3982, 4015, 4088, 5068, 5110, 5621, 5840, 6160, 6335, 6424, 7240, 7964, 8030, 8176, 9955, 10136, 10220, 11242, 12670, 12848, 13213, 13937, 14480, 15928, 16060, 19910, 20272, 20440, 22484, 25340, 26426, 27874, 28105, 31856, 32120, 39820, 40880, 44968, 50680, 52852, 55748, 56210, 64240, 66065, 69685, 79640, 89936, 92491, 101360, 105704, 111496, 112420, 132130, 139370, 145343, 159280, 184982, 211408, 222992, 224840, 264260, 278740, 290686, 369964, 449680, 462455, 528520, 557480, 581372, 726715, 739928, 924910, 1017401, 1057040, 1114960, 1162744, 1453430, 1479856, 1849820, 2034802, 2325488, 2906860, 3699640, 4069604, 5087005, 5813720, 7399280, 8139208, 10174010, 11627440, 16278416, 20348020, 40696040, 81392080]

約数ペア:

[(1, 81392080), (2, 40696040), (4, 20348020), (5, 16278416), (7, 11627440), (8, 10174010), (10, 8139208), (11, 7399280), (14, 5813720), (16, 5087005), (20, 4069604), (22, 3699640), (28, 2906860), (35, 2325488), (40, 2034802), (44, 1849820), (55, 1479856), (56, 1453430), (70, 1162744), (73, 1114960), (77, 1057040), (80, 1017401), (88, 924910), (110, 739928), (112, 726715), (140, 581372), (146, 557480), (154, 528520), (176, 462455), (181, 449680), (220, 369964), (280, 290686), (292, 278740), (308, 264260), (362, 224840), (365, 222992), (385, 211408), (440, 184982), (511, 159280), (560, 145343), (584, 139370), (616, 132130), (724, 112420), (730, 111496), (770, 105704), (803, 101360), (880, 92491), (905, 89936), (1022, 79640), (1168, 69685), (1232, 66065), (1267, 64240), (1448, 56210), (1460, 55748), (1540, 52852), (1606, 50680), (1810, 44968), (1991, 40880), (2044, 39820), (2534, 32120), (2555, 31856), (2896, 28105), (2920, 27874), (3080, 26426), (3212, 25340), (3620, 22484), (3982, 20440), (4015, 20272), (4088, 19910), (5068, 16060), (5110, 15928), (5621, 14480), (5840, 13937), (6160, 13213), (6335, 12848), (6424, 12670), (7240, 11242), (7964, 10220), (8030, 10136), (8176, 9955)]