19703277

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:231

約数の個数: 48

約数和(自身を含む): 33154240

約数和(自身を除く): 13450963

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 121, 163, 297, 333, 363, 407, 489, 999, 1089, 1221, 1467, 1793, 3267, 3663, 4401, 4477, 5379, 6031, 10989, 13431, 16137, 18093, 19723, 40293, 48411, 54279, 59169, 66341, 120879, 162837, 177507, 199023, 532521, 597069, 729751, 1791207, 2189253, 6567759, 19703277]

約数ペア:

[(1, 19703277), (3, 6567759), (9, 2189253), (11, 1791207), (27, 729751), (33, 597069), (37, 532521), (99, 199023), (111, 177507), (121, 162837), (163, 120879), (297, 66341), (333, 59169), (363, 54279), (407, 48411), (489, 40293), (999, 19723), (1089, 18093), (1221, 16137), (1467, 13431), (1793, 10989), (3267, 6031), (3663, 5379), (4401, 4477)]