20215839

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{3331}}^1$

素因数の和:3375

約数の個数: 24

約数和(自身を含む): 32733568

約数和(自身を除く): 12517729

約数列:

[1, 3, 7, 17, 21, 51, 119, 289, 357, 867, 2023, 3331, 6069, 9993, 23317, 56627, 69951, 169881, 396389, 962659, 1189167, 2887977, 6738613, 20215839]

約数ペア:

[(1, 20215839), (3, 6738613), (7, 2887977), (17, 1189167), (21, 962659), (51, 396389), (119, 169881), (289, 69951), (357, 56627), (867, 23317), (2023, 9993), (3331, 6069)]