208820727

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{1123}}^1$

素因数の和:1300

約数の個数: 32

約数和(自身を含む): 317237760

約数和(自身を除く): 108417033

約数列:

[1, 3, 9, 27, 71, 97, 213, 291, 639, 873, 1123, 1917, 2619, 3369, 6887, 10107, 20661, 30321, 61983, 79733, 108931, 185949, 239199, 326793, 717597, 980379, 2152791, 2941137, 7734101, 23202303, 69606909, 208820727]

約数ペア:

[(1, 208820727), (3, 69606909), (9, 23202303), (27, 7734101), (71, 2941137), (97, 2152791), (213, 980379), (291, 717597), (639, 326793), (873, 239199), (1123, 185949), (1917, 108931), (2619, 79733), (3369, 61983), (6887, 30321), (10107, 20661)]