20971535

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16981}}^1$

素因数の和:17018

約数の個数: 16

約数和(自身を含む): 28529760

約数和(自身を除く): 7558225

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 16981, 84905, 220753, 322639, 1103765, 1613195, 4194307, 20971535]

約数ペア:

[(1, 20971535), (5, 4194307), (13, 1613195), (19, 1103765), (65, 322639), (95, 220753), (247, 84905), (1235, 16981)]