21250779

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{20773}}^1$

素因数の和:20818

約数の個数: 16

約数和(自身を含む): 31908864

約数和(自身を除く): 10658085

約数列:

[1, 3, 11, 31, 33, 93, 341, 1023, 20773, 62319, 228503, 643963, 685509, 1931889, 7083593, 21250779]

約数ペア:

[(1, 21250779), (3, 7083593), (11, 1931889), (31, 685509), (33, 643963), (93, 228503), (341, 62319), (1023, 20773)]