816212781

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{223}}^1\times {\mathrm{619}}^1$

素因数の和:927

約数の個数: 40

約数和(自身を含む): 1243531520

約数和(自身を除く): 427318739

約数列:

[1, 3, 9, 27, 73, 81, 219, 223, 619, 657, 669, 1857, 1971, 2007, 5571, 5913, 6021, 16279, 16713, 18063, 45187, 48837, 50139, 135561, 138037, 146511, 406683, 414111, 439533, 1220049, 1242333, 1318599, 3660147, 3726999, 10076701, 11180997, 30230103, 90690309, 272070927, 816212781]

約数ペア:

[(1, 816212781), (3, 272070927), (9, 90690309), (27, 30230103), (73, 11180997), (81, 10076701), (219, 3726999), (223, 3660147), (619, 1318599), (657, 1242333), (669, 1220049), (1857, 439533), (1971, 414111), (2007, 406683), (5571, 146511), (5913, 138037), (6021, 135561), (16279, 50139), (16713, 48837), (18063, 45187)]