21119751

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18191}}^1$

素因数の和:18243

約数の個数: 16

約数和(自身を含む): 32017920

約数和(自身を除く): 10898169

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18191, 54573, 163719, 491157, 782213, 2346639, 7039917, 21119751]

約数ペア:

[(1, 21119751), (3, 7039917), (9, 2346639), (27, 782213), (43, 491157), (129, 163719), (387, 54573), (1161, 18191)]