18907917

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{20939}}^1$

素因数の和:20992

約数の個数: 16

約数和(自身を含む): 29483520

約数和(自身を除く): 10575603

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 20939, 62817, 146573, 439719, 900377, 2701131, 6302639, 18907917]

約数ペア:

[(1, 18907917), (3, 6302639), (7, 2701131), (21, 900377), (43, 439719), (129, 146573), (301, 62817), (903, 20939)]