21690927

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{2027}}^1$

素因数の和:2103

約数の個数: 24

約数和(自身を含む): 33218640

約数和(自身を除く): 11527713

約数列:

[1, 3, 9, 29, 41, 87, 123, 261, 369, 1189, 2027, 3567, 6081, 10701, 18243, 58783, 83107, 176349, 249321, 529047, 747963, 2410103, 7230309, 21690927]

約数ペア:

[(1, 21690927), (3, 7230309), (9, 2410103), (29, 747963), (41, 529047), (87, 249321), (123, 176349), (261, 83107), (369, 58783), (1189, 18243), (2027, 10701), (3567, 6081)]