21494109

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1831}}^1$

素因数の和:1897

約数の個数: 32

約数和(自身を含む): 36112384

約数和(自身を除く): 14618275

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 1831, 3913, 5493, 11739, 12817, 23803, 38451, 71409, 78733, 166621, 236199, 499863, 551131, 1023529, 1653393, 3070587, 7164703, 21494109]

約数ペア:

[(1, 21494109), (3, 7164703), (7, 3070587), (13, 1653393), (21, 1023529), (39, 551131), (43, 499863), (91, 236199), (129, 166621), (273, 78733), (301, 71409), (559, 38451), (903, 23803), (1677, 12817), (1831, 11739), (3913, 5493)]