261987

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{467}}^1$

素因数の和:498

約数の個数: 16

約数和(自身を含む): 404352

約数和(自身を除く): 142365

約数列:

[1, 3, 11, 17, 33, 51, 187, 467, 561, 1401, 5137, 7939, 15411, 23817, 87329, 261987]

約数ペア:

[(1, 261987), (3, 87329), (11, 23817), (17, 15411), (33, 7939), (51, 5137), (187, 1401), (467, 561)]