399726734

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{255907}}^1$

素因数の和:255991

約数の個数: 16

約数和(自身を含む): 663313536

約数和(自身を除く): 263586802

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 255907, 511814, 2814977, 5629954, 18169397, 36338794, 199863367, 399726734]

約数ペア:

[(1, 399726734), (2, 199863367), (11, 36338794), (22, 18169397), (71, 5629954), (142, 2814977), (781, 511814), (1562, 255907)]