18903911

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1223}}^1$

素因数の和:1306

約数の個数: 16

約数和(自身を含む): 21591360

約数和(自身を除く): 2687449

約数列:

[1, 13, 29, 41, 377, 533, 1189, 1223, 15457, 15899, 35467, 50143, 461071, 651859, 1454147, 18903911]

約数ペア:

[(1, 18903911), (13, 1454147), (29, 651859), (41, 461071), (377, 50143), (533, 35467), (1189, 15899), (1223, 15457)]