1520781561

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{1444237}}^1$

素因数の和:1444262

約数の個数: 20

約数和(自身を含む): 2446539172

約数和(自身を除く): 925757611

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 1444237, 4332711, 12998133, 18775081, 38994399, 56325243, 116983197, 168975729, 506927187, 1520781561]

約数ペア:

[(1, 1520781561), (3, 506927187), (9, 168975729), (13, 116983197), (27, 56325243), (39, 38994399), (81, 18775081), (117, 12998133), (351, 4332711), (1053, 1444237)]