16993395

素因数分解:

$3^4\times 5^1\times {\mathrm{41959}}^1$

素因数の和:41976

約数の個数: 20

約数和(自身を含む): 30462960

約数和(自身を除く): 13469565

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 41959, 125877, 209795, 377631, 629385, 1132893, 1888155, 3398679, 5664465, 16993395]

約数ペア:

[(1, 16993395), (3, 5664465), (5, 3398679), (9, 1888155), (15, 1132893), (27, 629385), (45, 377631), (81, 209795), (135, 125877), (405, 41959)]