18874911

素因数分解:

$3^1\times {\mathrm{11}}^3\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:228

約数の個数: 32

約数和(自身を含む): 28811520

約数和(自身を除く): 9936609

約数列:

[1, 3, 11, 29, 33, 87, 121, 163, 319, 363, 489, 957, 1331, 1793, 3509, 3993, 4727, 5379, 10527, 14181, 19723, 38599, 51997, 59169, 115797, 155991, 216953, 571967, 650859, 1715901, 6291637, 18874911]

約数ペア:

[(1, 18874911), (3, 6291637), (11, 1715901), (29, 650859), (33, 571967), (87, 216953), (121, 155991), (163, 115797), (319, 59169), (363, 51997), (489, 38599), (957, 19723), (1331, 14181), (1793, 10527), (3509, 5379), (3993, 4727)]