19905141

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{2549}}^1$

素因数の和:2708

約数の個数: 16

約数和(自身を含む): 28152000

約数和(自身を除く): 8246859

約数列:

[1, 3, 19, 57, 137, 411, 2549, 2603, 7647, 7809, 48431, 145293, 349213, 1047639, 6635047, 19905141]

約数ペア:

[(1, 19905141), (3, 6635047), (19, 1047639), (57, 349213), (137, 145293), (411, 48431), (2549, 7809), (2603, 7647)]