21296457

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26003}}^1$

素因数の和:26029

約数の個数: 24

約数和(自身を含む): 37861824

約数和(自身を除く): 16565367

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26003, 78009, 182021, 234027, 338039, 546063, 1014117, 1638189, 2366273, 3042351, 7098819, 21296457]

約数ペア:

[(1, 21296457), (3, 7098819), (7, 3042351), (9, 2366273), (13, 1638189), (21, 1014117), (39, 546063), (63, 338039), (91, 234027), (117, 182021), (273, 78009), (819, 26003)]