21052917

素因数分解:

$3^2\times {\mathrm{113}}^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1$

素因数の和:409

約数の個数: 24

約数和(自身を含む): 31110144

約数和(自身を除く): 10057227

約数列:

[1, 3, 9, 113, 127, 163, 339, 381, 489, 1017, 1143, 1467, 14351, 18419, 20701, 43053, 55257, 62103, 129159, 165771, 186309, 2339213, 7017639, 21052917]

約数ペア:

[(1, 21052917), (3, 7017639), (9, 2339213), (113, 186309), (127, 165771), (163, 129159), (339, 62103), (381, 55257), (489, 43053), (1017, 20701), (1143, 18419), (1467, 14351)]