20489259

素因数分解:

$3^1\times 7^1\times {\mathrm{563}}^1\times {\mathrm{1733}}^1$

素因数の和:2306

約数の個数: 16

約数和(自身を含む): 31295232

約数和(自身を除く): 10805973

約数列:

[1, 3, 7, 21, 563, 1689, 1733, 3941, 5199, 11823, 12131, 36393, 975679, 2927037, 6829753, 20489259]

約数ペア:

[(1, 20489259), (3, 6829753), (7, 2927037), (21, 975679), (563, 36393), (1689, 12131), (1733, 11823), (3941, 5199)]