20297860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 46811520

約数和(自身を除く): 26513660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 257, 359, 514, 718, 1028, 1285, 1436, 1795, 2570, 2827, 3590, 3949, 5140, 5654, 7180, 7898, 11308, 14135, 15796, 19745, 28270, 39490, 56540, 78980, 92263, 184526, 369052, 461315, 922630, 1014893, 1845260, 2029786, 4059572, 5074465, 10148930, 20297860]

約数ペア:

[(1, 20297860), (2, 10148930), (4, 5074465), (5, 4059572), (10, 2029786), (11, 1845260), (20, 1014893), (22, 922630), (44, 461315), (55, 369052), (110, 184526), (220, 92263), (257, 78980), (359, 56540), (514, 39490), (718, 28270), (1028, 19745), (1285, 15796), (1436, 14135), (1795, 11308), (2570, 7898), (2827, 7180), (3590, 5654), (3949, 5140)]