20947927

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1231}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 8856617

約数列:

[1, 7, 11, 13, 17, 77, 91, 119, 143, 187, 221, 1001, 1231, 1309, 1547, 2431, 8617, 13541, 16003, 17017, 20927, 94787, 112021, 146489, 176033, 230197, 272051, 1232231, 1611379, 1904357, 2992561, 20947927]

約数ペア:

[(1, 20947927), (7, 2992561), (11, 1904357), (13, 1611379), (17, 1232231), (77, 272051), (91, 230197), (119, 176033), (143, 146489), (187, 112021), (221, 94787), (1001, 20927), (1231, 17017), (1309, 16003), (1547, 13541), (2431, 8617)]