209781

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 358176

約数和(自身を除く): 148395

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 163, 429, 489, 1287, 1467, 1793, 2119, 5379, 6357, 16137, 19071, 23309, 69927, 209781]

約数ペア:

[(1, 209781), (3, 69927), (9, 23309), (11, 19071), (13, 16137), (33, 6357), (39, 5379), (99, 2119), (117, 1793), (143, 1467), (163, 1287), (429, 489)]