20805216460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3161887}}^1$

素因数の和:3161950

約数の個数: 48

約数和(自身を含む): 50994929664

約数和(自身を除く): 30189713204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3290, 6580, 3161887, 6323774, 12647548, 15809435, 22133209, 31618870, 44266418, 63237740, 88532836, 110666045, 148608689, 221332090, 297217378, 442664180, 594434756, 743043445, 1040260823, 1486086890, 2080521646, 2972173780, 4161043292, 5201304115, 10402608230, 20805216460]

約数ペア:

[(1, 20805216460), (2, 10402608230), (4, 5201304115), (5, 4161043292), (7, 2972173780), (10, 2080521646), (14, 1486086890), (20, 1040260823), (28, 743043445), (35, 594434756), (47, 442664180), (70, 297217378), (94, 221332090), (140, 148608689), (188, 110666045), (235, 88532836), (329, 63237740), (470, 44266418), (658, 31618870), (940, 22133209), (1316, 15809435), (1645, 12647548), (3290, 6323774), (6580, 3161887)]