21440368

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8221}}^1$

素因数の和:8392

約数の個数: 20

約数和(自身を含む): 41800648

約数和(自身を除く): 20360280

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8221, 16442, 32884, 65768, 131536, 1340023, 2680046, 5360092, 10720184, 21440368]

約数ペア:

[(1, 21440368), (2, 10720184), (4, 5360092), (8, 2680046), (16, 1340023), (163, 131536), (326, 65768), (652, 32884), (1304, 16442), (2608, 8221)]