21129111

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{991}}^1$

素因数の和:1123

約数の個数: 24

約数和(自身を含む): 32188416

約数和(自身を除く): 11059305

約数列:

[1, 3, 9, 23, 69, 103, 207, 309, 927, 991, 2369, 2973, 7107, 8919, 21321, 22793, 68379, 102073, 205137, 306219, 918657, 2347679, 7043037, 21129111]

約数ペア:

[(1, 21129111), (3, 7043037), (9, 2347679), (23, 918657), (69, 306219), (103, 205137), (207, 102073), (309, 68379), (927, 22793), (991, 21321), (2369, 8919), (2973, 7107)]