20691231

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{1277}}^1$

素因数の和:1782

約数の個数: 16

約数和(自身を含む): 30181248

約数和(自身を除く): 9490017

約数列:

[1, 3, 11, 33, 491, 1277, 1473, 3831, 5401, 14047, 16203, 42141, 627007, 1881021, 6897077, 20691231]

約数ペア:

[(1, 20691231), (3, 6897077), (11, 1881021), (33, 627007), (491, 42141), (1277, 16203), (1473, 14047), (3831, 5401)]