221382147

素因数分解:

$3^1\times 7^3\times {\mathrm{215143}}^1$

素因数の和:215167

約数の個数: 16

約数和(自身を含む): 344230400

約数和(自身を除く): 122848253

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 215143, 645429, 1506001, 4518003, 10542007, 31626021, 73794049, 221382147]

約数ペア:

[(1, 221382147), (3, 73794049), (7, 31626021), (21, 10542007), (49, 4518003), (147, 1506001), (343, 645429), (1029, 215143)]