211179987

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{128221}}^1$

素因数の和:128291

約数の個数: 16

約数和(自身を含む): 317990560

約数和(自身を除く): 106810573

約数列:

[1, 3, 9, 27, 61, 183, 549, 1647, 128221, 384663, 1153989, 3461967, 7821481, 23464443, 70393329, 211179987]

約数ペア:

[(1, 211179987), (3, 70393329), (9, 23464443), (27, 7821481), (61, 3461967), (183, 1153989), (549, 384663), (1647, 128221)]