665253

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:246

約数の個数: 20

約数和(自身を含む): 1022208

約数和(自身を除く): 356955

約数列:

[1, 3, 9, 27, 43, 81, 129, 191, 387, 573, 1161, 1719, 3483, 5157, 8213, 15471, 24639, 73917, 221751, 665253]

約数ペア:

[(1, 665253), (3, 221751), (9, 73917), (27, 24639), (43, 15471), (81, 8213), (129, 5157), (191, 3483), (387, 1719), (573, 1161)]