21089541

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{997}}^1$

素因数の和:1652

約数の個数: 16

約数和(自身を含む): 30754368

約数和(自身を除く): 9664827

約数列:

[1, 3, 11, 33, 641, 997, 1923, 2991, 7051, 10967, 21153, 32901, 639077, 1917231, 7029847, 21089541]

約数ペア:

[(1, 21089541), (3, 7029847), (11, 1917231), (33, 639077), (641, 32901), (997, 21153), (1923, 10967), (2991, 7051)]