20123712009

素因数分解:

$3^4\times {\mathrm{283}}^1\times {\mathrm{877883}}^1$

素因数の和:878178

約数の個数: 20

約数和(自身を含む): 30167605776

約数和(自身を除く): 10043893767

約数列:

[1, 3, 9, 27, 81, 283, 849, 2547, 7641, 22923, 877883, 2633649, 7900947, 23702841, 71108523, 248440889, 745322667, 2235968001, 6707904003, 20123712009]

約数ペア:

[(1, 20123712009), (3, 6707904003), (9, 2235968001), (27, 745322667), (81, 248440889), (283, 71108523), (849, 23702841), (2547, 7900947), (7641, 2633649), (22923, 877883)]