81911660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{7433}}^1$

素因数の和:7490

約数の個数: 48

約数和(自身を含む): 187336800

約数和(自身を除く): 105425140

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 290, 380, 551, 580, 1102, 2204, 2755, 5510, 7433, 11020, 14866, 29732, 37165, 74330, 141227, 148660, 215557, 282454, 431114, 564908, 706135, 862228, 1077785, 1412270, 2155570, 2824540, 4095583, 4311140, 8191166, 16382332, 20477915, 40955830, 81911660]

約数ペア:

[(1, 81911660), (2, 40955830), (4, 20477915), (5, 16382332), (10, 8191166), (19, 4311140), (20, 4095583), (29, 2824540), (38, 2155570), (58, 1412270), (76, 1077785), (95, 862228), (116, 706135), (145, 564908), (190, 431114), (290, 282454), (380, 215557), (551, 148660), (580, 141227), (1102, 74330), (2204, 37165), (2755, 29732), (5510, 14866), (7433, 11020)]