161002220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{259681}}^1$

素因数の和:259721

約数の個数: 24

約数和(自身を含む): 349012608

約数和(自身を除く): 188010388

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 259681, 519362, 1038724, 1298405, 2596810, 5193620, 8050111, 16100222, 32200444, 40250555, 80501110, 161002220]

約数ペア:

[(1, 161002220), (2, 80501110), (4, 40250555), (5, 32200444), (10, 16100222), (20, 8050111), (31, 5193620), (62, 2596810), (124, 1298405), (155, 1038724), (310, 519362), (620, 259681)]