81869151

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{42841}}^1$

素因数の和:42871

約数の個数: 24

約数和(自身を含む): 136751664

約数和(自身を除く): 54882513

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 42841, 128523, 299887, 556933, 899661, 1670799, 2099209, 3898531, 6297627, 11695593, 27289717, 81869151]

約数ペア:

[(1, 81869151), (3, 27289717), (7, 11695593), (13, 6297627), (21, 3898531), (39, 2099209), (49, 1670799), (91, 899661), (147, 556933), (273, 299887), (637, 128523), (1911, 42841)]