221420121

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{337}}^1\times {\mathrm{991}}^1$

素因数の和:1361

約数の個数: 32

約数和(自身を含む): 337978368

約数和(自身を除く): 116558247

約数列:

[1, 3, 13, 17, 39, 51, 221, 337, 663, 991, 1011, 2973, 4381, 5729, 12883, 13143, 16847, 17187, 38649, 50541, 74477, 219011, 223431, 333967, 657033, 1001901, 4341571, 5677439, 13024713, 17032317, 73806707, 221420121]

約数ペア:

[(1, 221420121), (3, 73806707), (13, 17032317), (17, 13024713), (39, 5677439), (51, 4341571), (221, 1001901), (337, 657033), (663, 333967), (991, 223431), (1011, 219011), (2973, 74477), (4381, 50541), (5729, 38649), (12883, 17187), (13143, 16847)]