21513897

素因数分解:

$3^3\times {\mathrm{751}}^1\times {\mathrm{1061}}^1$

素因数の和:1821

約数の個数: 16

約数和(自身を含む): 31944960

約数和(自身を除く): 10431063

約数列:

[1, 3, 9, 27, 751, 1061, 2253, 3183, 6759, 9549, 20277, 28647, 796811, 2390433, 7171299, 21513897]

約数ペア:

[(1, 21513897), (3, 7171299), (9, 2390433), (27, 796811), (751, 28647), (1061, 20277), (2253, 9549), (3183, 6759)]