20957027

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{137}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 26630688

約数和(自身を除く): 5673661

約数列:

[1, 7, 13, 41, 91, 137, 287, 533, 959, 1681, 1781, 3731, 5617, 11767, 12467, 21853, 39319, 73021, 152971, 230297, 511147, 1612079, 2993861, 20957027]

約数ペア:

[(1, 20957027), (7, 2993861), (13, 1612079), (41, 511147), (91, 230297), (137, 152971), (287, 73021), (533, 39319), (959, 21853), (1681, 12467), (1781, 11767), (3731, 5617)]