18911271

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{4729}}^1$

素因数の和:4806

約数の個数: 16

約数和(自身を含む): 26639360

約数和(自身を除く): 7728089

約数列:

[1, 3, 31, 43, 93, 129, 1333, 3999, 4729, 14187, 146599, 203347, 439797, 610041, 6303757, 18911271]

約数ペア:

[(1, 18911271), (3, 6303757), (31, 610041), (43, 439797), (93, 203347), (129, 146599), (1333, 14187), (3999, 4729)]