20385693

素因数分解:

$3^2\times {\mathrm{31}}^2\times {\mathrm{2357}}^1$

素因数の和:2425

約数の個数: 18

約数和(自身を含む): 30439422

約数和(自身を除く): 10053729

約数列:

[1, 3, 9, 31, 93, 279, 961, 2357, 2883, 7071, 8649, 21213, 73067, 219201, 657603, 2265077, 6795231, 20385693]

約数ペア:

[(1, 20385693), (3, 6795231), (9, 2265077), (31, 657603), (93, 219201), (279, 73067), (961, 21213), (2357, 8649), (2883, 7071)]