81900388060

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20599}}^1\times {\mathrm{10463}}^1$

素因数の和:31090

約数の個数: 48

約数和(自身を含む): 181069056000

約数和(自身を除く): 99168667940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 10463, 20599, 20926, 41198, 41852, 52315, 82396, 102995, 104630, 198797, 205990, 209260, 391381, 397594, 411980, 782762, 795188, 993985, 1565524, 1956905, 1987970, 3913810, 3975940, 7827620, 215527337, 431054674, 862109348, 1077636685, 2155273370, 4095019403, 4310546740, 8190038806, 16380077612, 20475097015, 40950194030, 81900388060]

約数ペア:

[(1, 81900388060), (2, 40950194030), (4, 20475097015), (5, 16380077612), (10, 8190038806), (19, 4310546740), (20, 4095019403), (38, 2155273370), (76, 1077636685), (95, 862109348), (190, 431054674), (380, 215527337), (10463, 7827620), (20599, 3975940), (20926, 3913810), (41198, 1987970), (41852, 1956905), (52315, 1565524), (82396, 993985), (102995, 795188), (104630, 782762), (198797, 411980), (205990, 397594), (209260, 391381)]