21188888

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16451}}^1$

素因数の和:16487

約数の個数: 32

約数和(自身を含む): 47381760

約数和(自身を除く): 26192872

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 1288, 16451, 32902, 65804, 115157, 131608, 230314, 378373, 460628, 756746, 921256, 1513492, 2648611, 3026984, 5297222, 10594444, 21188888]

約数ペア:

[(1, 21188888), (2, 10594444), (4, 5297222), (7, 3026984), (8, 2648611), (14, 1513492), (23, 921256), (28, 756746), (46, 460628), (56, 378373), (92, 230314), (161, 131608), (184, 115157), (322, 65804), (644, 32902), (1288, 16451)]