20108080

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13229}}^1$

素因数の和:13261

約数の個数: 40

約数和(自身を含む): 49215600

約数和(自身を除く): 29107520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13229, 26458, 52916, 66145, 105832, 132290, 211664, 251351, 264580, 502702, 529160, 1005404, 1058320, 1256755, 2010808, 2513510, 4021616, 5027020, 10054040, 20108080]

約数ペア:

[(1, 20108080), (2, 10054040), (4, 5027020), (5, 4021616), (8, 2513510), (10, 2010808), (16, 1256755), (19, 1058320), (20, 1005404), (38, 529160), (40, 502702), (76, 264580), (80, 251351), (95, 211664), (152, 132290), (190, 105832), (304, 66145), (380, 52916), (760, 26458), (1520, 13229)]