21023253

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{383}}^1$

素因数の和:518

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 12154347

約数列:

[1, 3, 9, 19, 27, 57, 107, 171, 321, 383, 513, 963, 1149, 2033, 2889, 3447, 6099, 7277, 10341, 18297, 21831, 40981, 54891, 65493, 122943, 196479, 368829, 778639, 1106487, 2335917, 7007751, 21023253]

約数ペア:

[(1, 21023253), (3, 7007751), (9, 2335917), (19, 1106487), (27, 778639), (57, 368829), (107, 196479), (171, 122943), (321, 65493), (383, 54891), (513, 40981), (963, 21831), (1149, 18297), (2033, 10341), (2889, 7277), (3447, 6099)]