638121

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:392

約数の個数: 16

約数和(自身を含む): 946368

約数和(自身を除く): 308247

約数列:

[1, 3, 11, 33, 61, 183, 317, 671, 951, 2013, 3487, 10461, 19337, 58011, 212707, 638121]

約数ペア:

[(1, 638121), (3, 212707), (11, 58011), (33, 19337), (61, 10461), (183, 3487), (317, 2013), (671, 951)]