211837821

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{1087}}^1$

素因数の和:1385

約数の個数: 32

約数和(自身を含む): 321699840

約数和(自身を除く): 109862019

約数列:

[1, 3, 13, 19, 39, 57, 247, 263, 741, 789, 1087, 3261, 3419, 4997, 10257, 14131, 14991, 20653, 42393, 61959, 64961, 194883, 268489, 285881, 805467, 857643, 3716453, 5431739, 11149359, 16295217, 70612607, 211837821]

約数ペア:

[(1, 211837821), (3, 70612607), (13, 16295217), (19, 11149359), (39, 5431739), (57, 3716453), (247, 857643), (263, 805467), (741, 285881), (789, 268489), (1087, 194883), (3261, 64961), (3419, 61959), (4997, 42393), (10257, 20653), (14131, 14991)]