21977127

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 32542848

約数和(自身を除く): 10565721

約数列:

[1, 3, 9, 71, 163, 211, 213, 489, 633, 639, 1467, 1899, 11573, 14981, 34393, 34719, 44943, 103179, 104157, 134829, 309537, 2441903, 7325709, 21977127]

約数ペア:

[(1, 21977127), (3, 7325709), (9, 2441903), (71, 309537), (163, 134829), (211, 104157), (213, 103179), (489, 44943), (633, 34719), (639, 34393), (1467, 14981), (1899, 11573)]