20828865

素因数分解:

$3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6581}}^1$

素因数の和:6800

約数の個数: 16

約数和(自身を含む): 33489216

約数和(自身を除く): 12660351

約数列:

[1, 3, 5, 15, 211, 633, 1055, 3165, 6581, 19743, 32905, 98715, 1388591, 4165773, 6942955, 20828865]

約数ペア:

[(1, 20828865), (3, 6942955), (5, 4165773), (15, 1388591), (211, 98715), (633, 32905), (1055, 19743), (3165, 6581)]