20657819

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1657}}^1$

素因数の和:1814

約数の個数: 16

約数和(自身を含む): 25626048

約数和(自身を除く): 4968229

約数列:

[1, 7, 13, 91, 137, 959, 1657, 1781, 11599, 12467, 21541, 150787, 227009, 1589063, 2951117, 20657819]

約数ペア:

[(1, 20657819), (7, 2951117), (13, 1589063), (91, 227009), (137, 150787), (959, 21541), (1657, 12467), (1781, 11599)]