20498973

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{149}}^1\times {\mathrm{379}}^1$

素因数の和:553

約数の個数: 24

約数和(自身を含む): 30324000

約数和(自身を除く): 9825027

約数列:

[1, 3, 11, 33, 121, 149, 363, 379, 447, 1137, 1639, 4169, 4917, 12507, 18029, 45859, 54087, 56471, 137577, 169413, 621181, 1863543, 6832991, 20498973]

約数ペア:

[(1, 20498973), (3, 6832991), (11, 1863543), (33, 621181), (121, 169413), (149, 137577), (363, 56471), (379, 54087), (447, 45859), (1137, 18029), (1639, 12507), (4169, 4917)]