20348020

素因数分解:

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

素因数の和:281

約数の個数: 96

約数和(自身を含む): 54302976

約数和(自身を除く): 33954956

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 73, 77, 110, 140, 146, 154, 181, 220, 292, 308, 362, 365, 385, 511, 724, 730, 770, 803, 905, 1022, 1267, 1460, 1540, 1606, 1810, 1991, 2044, 2534, 2555, 3212, 3620, 3982, 4015, 5068, 5110, 5621, 6335, 7964, 8030, 9955, 10220, 11242, 12670, 13213, 13937, 16060, 19910, 22484, 25340, 26426, 27874, 28105, 39820, 52852, 55748, 56210, 66065, 69685, 92491, 112420, 132130, 139370, 145343, 184982, 264260, 278740, 290686, 369964, 462455, 581372, 726715, 924910, 1017401, 1453430, 1849820, 2034802, 2906860, 4069604, 5087005, 10174010, 20348020]

約数ペア:

[(1, 20348020), (2, 10174010), (4, 5087005), (5, 4069604), (7, 2906860), (10, 2034802), (11, 1849820), (14, 1453430), (20, 1017401), (22, 924910), (28, 726715), (35, 581372), (44, 462455), (55, 369964), (70, 290686), (73, 278740), (77, 264260), (110, 184982), (140, 145343), (146, 139370), (154, 132130), (181, 112420), (220, 92491), (292, 69685), (308, 66065), (362, 56210), (365, 55748), (385, 52852), (511, 39820), (724, 28105), (730, 27874), (770, 26426), (803, 25340), (905, 22484), (1022, 19910), (1267, 16060), (1460, 13937), (1540, 13213), (1606, 12670), (1810, 11242), (1991, 10220), (2044, 9955), (2534, 8030), (2555, 7964), (3212, 6335), (3620, 5621), (3982, 5110), (4015, 5068)]