20578467

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1753}}^1$

素因数の和:1819

約数の個数: 32

約数和(自身を含む): 34574848

約数和(自身を除く): 13996381

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 1753, 3913, 5259, 11739, 12271, 22789, 36813, 68367, 75379, 159523, 226137, 478569, 527653, 979927, 1582959, 2939781, 6859489, 20578467]

約数ペア:

[(1, 20578467), (3, 6859489), (7, 2939781), (13, 1582959), (21, 979927), (39, 527653), (43, 478569), (91, 226137), (129, 159523), (273, 75379), (301, 68367), (559, 36813), (903, 22789), (1677, 12271), (1753, 11739), (3913, 5259)]