20129421627

素因数分解:

$3^2\times 7^2\times {\mathrm{45644947}}^1$

素因数の和:45644967

約数の個数: 18

約数和(自身を含む): 33822906468

約数和(自身を除く): 13693484841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45644947, 136934841, 319514629, 410804523, 958543887, 2236602403, 2875631661, 6709807209, 20129421627]

約数ペア:

[(1, 20129421627), (3, 6709807209), (7, 2875631661), (9, 2236602403), (21, 958543887), (49, 410804523), (63, 319514629), (147, 136934841), (441, 45644947)]