172019961

素因数分解:

$3^2\times {\mathrm{31}}^2\times {\mathrm{19889}}^1$

素因数の和:19957

約数の個数: 18

約数和(自身を含む): 256760010

約数和(自身を除く): 84740049

約数列:

[1, 3, 9, 31, 93, 279, 961, 2883, 8649, 19889, 59667, 179001, 616559, 1849677, 5549031, 19113329, 57339987, 172019961]

約数ペア:

[(1, 172019961), (3, 57339987), (9, 19113329), (31, 5549031), (93, 1849677), (279, 616559), (961, 179001), (2883, 59667), (8649, 19889)]