21166218

素因数分解:

$2^1\times 3^3\times {\mathrm{391967}}^1$

素因数の和:391978

約数の個数: 16

約数和(自身を含む): 47036160

約数和(自身を除く): 25869942

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 391967, 783934, 1175901, 2351802, 3527703, 7055406, 10583109, 21166218]

約数ペア:

[(1, 21166218), (2, 10583109), (3, 7055406), (6, 3527703), (9, 2351802), (18, 1175901), (27, 783934), (54, 391967)]