21383306

素因数分解:

$2^1\times 7^4\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:164

約数の個数: 40

約数和(自身を含む): 38552964

約数和(自身を除く): 17169658

約数列:

[1, 2, 7, 14, 49, 61, 73, 98, 122, 146, 343, 427, 511, 686, 854, 1022, 2401, 2989, 3577, 4453, 4802, 5978, 7154, 8906, 20923, 25039, 31171, 41846, 50078, 62342, 146461, 175273, 218197, 292922, 350546, 436394, 1527379, 3054758, 10691653, 21383306]

約数ペア:

[(1, 21383306), (2, 10691653), (7, 3054758), (14, 1527379), (49, 436394), (61, 350546), (73, 292922), (98, 218197), (122, 175273), (146, 146461), (343, 62342), (427, 50078), (511, 41846), (686, 31171), (854, 25039), (1022, 20923), (2401, 8906), (2989, 7154), (3577, 5978), (4453, 4802)]