399355

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:206

約数の個数: 16

約数和(自身を含む): 536544

約数和(自身を除く): 137189

約数列:

[1, 5, 11, 53, 55, 137, 265, 583, 685, 1507, 2915, 7261, 7535, 36305, 79871, 399355]

約数ペア:

[(1, 399355), (5, 79871), (11, 36305), (53, 7535), (55, 7261), (137, 2915), (265, 1507), (583, 685)]