20355381

素因数分解:

$3^5\times {\mathrm{211}}^1\times {\mathrm{397}}^1$

素因数の和:623

約数の個数: 24

約数和(自身を含む): 30712864

約数和(自身を除く): 10357483

約数列:

[1, 3, 9, 27, 81, 211, 243, 397, 633, 1191, 1899, 3573, 5697, 10719, 17091, 32157, 51273, 83767, 96471, 251301, 753903, 2261709, 6785127, 20355381]

約数ペア:

[(1, 20355381), (3, 6785127), (9, 2261709), (27, 753903), (81, 251301), (211, 96471), (243, 83767), (397, 51273), (633, 32157), (1191, 17091), (1899, 10719), (3573, 5697)]