18982431

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{2003}}^1$

素因数の和:2034

約数の個数: 28

約数和(自身を含む): 30665208

約数和(自身を除く): 11682777

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 729, 1053, 2003, 3159, 6009, 9477, 18027, 26039, 54081, 78117, 162243, 234351, 486729, 703053, 1460187, 2109159, 6327477, 18982431]

約数ペア:

[(1, 18982431), (3, 6327477), (9, 2109159), (13, 1460187), (27, 703053), (39, 486729), (81, 234351), (117, 162243), (243, 78117), (351, 54081), (729, 26039), (1053, 18027), (2003, 9477), (3159, 6009)]