21657201

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{5981}}^1$

素因数の和:6072

約数の個数: 16

約数和(自身を含む): 31010688

約数和(自身を除く): 9353487

約数列:

[1, 3, 17, 51, 71, 213, 1207, 3621, 5981, 17943, 101677, 305031, 424651, 1273953, 7219067, 21657201]

約数ペア:

[(1, 21657201), (3, 7219067), (17, 1273953), (51, 424651), (71, 305031), (213, 101677), (1207, 17943), (3621, 5981)]