21266037

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1409}}^1$

素因数の和:1474

約数の個数: 32

約数和(自身を含む): 34742400

約数和(自身を除く): 13476363

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 351, 387, 559, 1161, 1409, 1677, 4227, 5031, 12681, 15093, 18317, 38043, 54951, 60587, 164853, 181761, 494559, 545283, 787631, 1635849, 2362893, 7088679, 21266037]

約数ペア:

[(1, 21266037), (3, 7088679), (9, 2362893), (13, 1635849), (27, 787631), (39, 545283), (43, 494559), (117, 181761), (129, 164853), (351, 60587), (387, 54951), (559, 38043), (1161, 18317), (1409, 15093), (1677, 12681), (4227, 5031)]