20411361

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:677

約数の個数: 24

約数和(自身を含む): 30700800

約数和(自身を除く): 10289439

約数列:

[1, 3, 9, 31, 93, 149, 279, 447, 491, 1341, 1473, 4419, 4619, 13857, 15221, 41571, 45663, 73159, 136989, 219477, 658431, 2267929, 6803787, 20411361]

約数ペア:

[(1, 20411361), (3, 6803787), (9, 2267929), (31, 658431), (93, 219477), (149, 136989), (279, 73159), (447, 45663), (491, 41571), (1341, 15221), (1473, 13857), (4419, 4619)]