208129628

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{72167}}^1$

素因数の和:72281

約数の個数: 24

約数和(自身を含む): 420306432

約数和(自身を除く): 212176804

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 72167, 144334, 288668, 505169, 1010338, 2020676, 7433201, 14866402, 29732804, 52032407, 104064814, 208129628]

約数ペア:

[(1, 208129628), (2, 104064814), (4, 52032407), (7, 29732804), (14, 14866402), (28, 7433201), (103, 2020676), (206, 1010338), (412, 505169), (721, 288668), (1442, 144334), (2884, 72167)]