20882781

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1277}}^1$

素因数の和:1385

約数の個数: 24

約数和(自身を含む): 31898880

約数和(自身を除く): 11016099

約数列:

[1, 3, 9, 23, 69, 79, 207, 237, 711, 1277, 1817, 3831, 5451, 11493, 16353, 29371, 88113, 100883, 264339, 302649, 907947, 2320309, 6960927, 20882781]

約数ペア:

[(1, 20882781), (3, 6960927), (9, 2320309), (23, 907947), (69, 302649), (79, 264339), (207, 100883), (237, 88113), (711, 29371), (1277, 16353), (1817, 11493), (3831, 5451)]