21661731

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26449}}^1$

素因数の和:26475

約数の個数: 24

約数和(自身を含む): 38511200

約数和(自身を除く): 16849469

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26449, 79347, 185143, 238041, 343837, 555429, 1031511, 1666287, 2406859, 3094533, 7220577, 21661731]

約数ペア:

[(1, 21661731), (3, 7220577), (7, 3094533), (9, 2406859), (13, 1666287), (21, 1031511), (39, 555429), (63, 343837), (91, 238041), (117, 185143), (273, 79347), (819, 26449)]