720819

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{809}}^1$

素因数の和:832

約数の個数: 20

約数和(自身を含む): 1176120

約数和(自身を除く): 455301

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 809, 891, 2427, 7281, 8899, 21843, 26697, 65529, 80091, 240273, 720819]

約数ペア:

[(1, 720819), (3, 240273), (9, 80091), (11, 65529), (27, 26697), (33, 21843), (81, 8899), (99, 7281), (297, 2427), (809, 891)]