16820817

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13913}}^1$

素因数の和:13960

約数の個数: 16

約数和(自身を含む): 24933888

約数和(自身を除く): 8113071

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 13913, 41739, 180869, 431303, 542607, 1293909, 5606939, 16820817]

約数ペア:

[(1, 16820817), (3, 5606939), (13, 1293909), (31, 542607), (39, 431303), (93, 180869), (403, 41739), (1209, 13913)]