20689911

素因数分解:

$3^4\times {\mathrm{11}}^2\times {\mathrm{2111}}^1$

素因数の和:2145

約数の個数: 30

約数和(自身を含む): 33988416

約数和(自身を除く): 13298505

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 121, 297, 363, 891, 1089, 2111, 3267, 6333, 9801, 18999, 23221, 56997, 69663, 170991, 208989, 255431, 626967, 766293, 1880901, 2298879, 6896637, 20689911]

約数ペア:

[(1, 20689911), (3, 6896637), (9, 2298879), (11, 1880901), (27, 766293), (33, 626967), (81, 255431), (99, 208989), (121, 170991), (297, 69663), (363, 56997), (891, 23221), (1089, 18999), (2111, 9801), (3267, 6333)]