21920415

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{132851}}^1$

素因数の和:132870

約数の個数: 16

約数和(自身を含む): 38261376

約数和(自身を除く): 16340961

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 132851, 398553, 664255, 1461361, 1992765, 4384083, 7306805, 21920415]

約数ペア:

[(1, 21920415), (3, 7306805), (5, 4384083), (11, 1992765), (15, 1461361), (33, 664255), (55, 398553), (165, 132851)]