81334060

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{1109}}^1$

素因数の和:1330

約数の個数: 48

約数和(自身を含む): 180885600

約数和(自身を除く): 99551540

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 193, 380, 386, 772, 965, 1109, 1930, 2218, 3667, 3860, 4436, 5545, 7334, 11090, 14668, 18335, 21071, 22180, 36670, 42142, 73340, 84284, 105355, 210710, 214037, 421420, 428074, 856148, 1070185, 2140370, 4066703, 4280740, 8133406, 16266812, 20333515, 40667030, 81334060]

約数ペア:

[(1, 81334060), (2, 40667030), (4, 20333515), (5, 16266812), (10, 8133406), (19, 4280740), (20, 4066703), (38, 2140370), (76, 1070185), (95, 856148), (190, 428074), (193, 421420), (380, 214037), (386, 210710), (772, 105355), (965, 84284), (1109, 73340), (1930, 42142), (2218, 36670), (3667, 22180), (3860, 21071), (4436, 18335), (5545, 14668), (7334, 11090)]