20449491

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 30228480

約数和(自身を除く): 9778989

約数列:

[1, 3, 19, 31, 57, 71, 93, 163, 213, 489, 589, 1349, 1767, 2201, 3097, 4047, 5053, 6603, 9291, 11573, 15159, 34719, 41819, 96007, 125457, 219887, 288021, 358763, 659661, 1076289, 6816497, 20449491]

約数ペア:

[(1, 20449491), (3, 6816497), (19, 1076289), (31, 659661), (57, 358763), (71, 288021), (93, 219887), (163, 125457), (213, 96007), (489, 41819), (589, 34719), (1349, 15159), (1767, 11573), (2201, 9291), (3097, 6603), (4047, 5053)]