20685231

素因数分解:

$3^2\times 7^1\times {\mathrm{313}}^1\times {\mathrm{1049}}^1$

素因数の和:1375

約数の個数: 24

約数和(自身を含む): 34288800

約数和(自身を除く): 13603569

約数列:

[1, 3, 7, 9, 21, 63, 313, 939, 1049, 2191, 2817, 3147, 6573, 7343, 9441, 19719, 22029, 66087, 328337, 985011, 2298359, 2955033, 6895077, 20685231]

約数ペア:

[(1, 20685231), (3, 6895077), (7, 2955033), (9, 2298359), (21, 985011), (63, 328337), (313, 66087), (939, 22029), (1049, 19719), (2191, 9441), (2817, 7343), (3147, 6573)]