216621

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:193

約数の個数: 16

約数和(自身を含む): 328320

約数和(自身を除く): 111699

約数列:

[1, 3, 9, 27, 71, 113, 213, 339, 639, 1017, 1917, 3051, 8023, 24069, 72207, 216621]

約数ペア:

[(1, 216621), (3, 72207), (9, 24069), (27, 8023), (71, 3051), (113, 1917), (213, 1017), (339, 639)]