21516489

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4889}}^1$

素因数の和:5061

約数の個数: 16

約数和(自身を含む): 32078400

約数和(自身を除く): 10561911

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 4889, 14667, 44001, 132003, 796907, 2390721, 7172163, 21516489]

約数ペア:

[(1, 21516489), (3, 7172163), (9, 2390721), (27, 796907), (163, 132003), (489, 44001), (1467, 14667), (4401, 4889)]