18689901

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{2503}}^1$

素因数の和:2656

約数の個数: 16

約数和(自身を含む): 26442240

約数和(自身を除く): 7752339

約数列:

[1, 3, 19, 57, 131, 393, 2489, 2503, 7467, 7509, 47557, 142671, 327893, 983679, 6229967, 18689901]

約数ペア:

[(1, 18689901), (3, 6229967), (19, 983679), (57, 327893), (131, 142671), (393, 47557), (2489, 7509), (2503, 7467)]