21811383

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:177

約数の個数: 64

約数和(自身を含む): 38338560

約数和(自身を除く): 16527177

約数列:

[1, 3, 9, 11, 23, 27, 31, 33, 69, 93, 99, 103, 207, 253, 279, 297, 309, 341, 621, 713, 759, 837, 927, 1023, 1133, 2139, 2277, 2369, 2781, 3069, 3193, 3399, 6417, 6831, 7107, 7843, 9207, 9579, 10197, 19251, 21321, 23529, 26059, 28737, 30591, 35123, 63963, 70587, 73439, 78177, 86211, 105369, 211761, 220317, 234531, 316107, 660951, 703593, 807829, 948321, 1982853, 2423487, 7270461, 21811383]

約数ペア:

[(1, 21811383), (3, 7270461), (9, 2423487), (11, 1982853), (23, 948321), (27, 807829), (31, 703593), (33, 660951), (69, 316107), (93, 234531), (99, 220317), (103, 211761), (207, 105369), (253, 86211), (279, 78177), (297, 73439), (309, 70587), (341, 63963), (621, 35123), (713, 30591), (759, 28737), (837, 26059), (927, 23529), (1023, 21321), (1133, 19251), (2139, 10197), (2277, 9579), (2369, 9207), (2781, 7843), (3069, 7107), (3193, 6831), (3399, 6417)]