20458295

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 30357504

約数和(自身を除く): 9899209

約数列:

[1, 5, 11, 13, 31, 55, 65, 71, 143, 155, 169, 341, 355, 403, 715, 781, 845, 923, 1705, 1859, 2015, 2201, 3905, 4433, 4615, 5239, 9295, 10153, 11005, 11999, 22165, 24211, 26195, 28613, 50765, 57629, 59995, 121055, 131989, 143065, 288145, 314743, 371969, 659945, 1573715, 1859845, 4091659, 20458295]

約数ペア:

[(1, 20458295), (5, 4091659), (11, 1859845), (13, 1573715), (31, 659945), (55, 371969), (65, 314743), (71, 288145), (143, 143065), (155, 131989), (169, 121055), (341, 59995), (355, 57629), (403, 50765), (715, 28613), (781, 26195), (845, 24211), (923, 22165), (1705, 11999), (1859, 11005), (2015, 10153), (2201, 9295), (3905, 5239), (4433, 4615)]