18918819

素因数分解:

$3^3\times {\mathrm{89}}^1\times {\mathrm{7873}}^1$

素因数の和:7971

約数の個数: 16

約数和(自身を含む): 28346400

約数和(自身を除く): 9427581

約数列:

[1, 3, 9, 27, 89, 267, 801, 2403, 7873, 23619, 70857, 212571, 700697, 2102091, 6306273, 18918819]

約数ペア:

[(1, 18918819), (3, 6306273), (9, 2102091), (27, 700697), (89, 212571), (267, 70857), (801, 23619), (2403, 7873)]