20754118

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 42094080

約数和(自身を除く): 21339962

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 41, 77, 82, 133, 154, 173, 209, 266, 287, 346, 418, 451, 574, 779, 902, 1211, 1463, 1558, 1903, 2422, 2926, 3157, 3287, 3806, 5453, 6314, 6574, 7093, 8569, 10906, 13321, 14186, 17138, 23009, 26642, 36157, 46018, 49651, 59983, 72314, 78023, 99302, 119966, 134767, 156046, 253099, 269534, 506198, 546161, 943369, 1092322, 1482437, 1886738, 2964874, 10377059, 20754118]

約数ペア:

[(1, 20754118), (2, 10377059), (7, 2964874), (11, 1886738), (14, 1482437), (19, 1092322), (22, 943369), (38, 546161), (41, 506198), (77, 269534), (82, 253099), (133, 156046), (154, 134767), (173, 119966), (209, 99302), (266, 78023), (287, 72314), (346, 59983), (418, 49651), (451, 46018), (574, 36157), (779, 26642), (902, 23009), (1211, 17138), (1463, 14186), (1558, 13321), (1903, 10906), (2422, 8569), (2926, 7093), (3157, 6574), (3287, 6314), (3806, 5453)]