21034585

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 31200768

約数和(自身を除く): 10166183

約数列:

[1, 5, 11, 13, 31, 55, 65, 73, 143, 155, 169, 341, 365, 403, 715, 803, 845, 949, 1705, 1859, 2015, 2263, 4015, 4433, 4745, 5239, 9295, 10439, 11315, 12337, 22165, 24893, 26195, 29419, 52195, 57629, 61685, 124465, 135707, 147095, 288145, 323609, 382447, 678535, 1618045, 1912235, 4206917, 21034585]

約数ペア:

[(1, 21034585), (5, 4206917), (11, 1912235), (13, 1618045), (31, 678535), (55, 382447), (65, 323609), (73, 288145), (143, 147095), (155, 135707), (169, 124465), (341, 61685), (365, 57629), (403, 52195), (715, 29419), (803, 26195), (845, 24893), (949, 22165), (1705, 12337), (1859, 11315), (2015, 10439), (2263, 9295), (4015, 5239), (4433, 4745)]