81640880

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21713}}^1$

素因数の和:21773

約数の個数: 40

約数和(自身を含む): 193862592

約数和(自身を除く): 112221712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 21713, 43426, 86852, 108565, 173704, 217130, 347408, 434260, 868520, 1020511, 1737040, 2041022, 4082044, 5102555, 8164088, 10205110, 16328176, 20410220, 40820440, 81640880]

約数ペア:

[(1, 81640880), (2, 40820440), (4, 20410220), (5, 16328176), (8, 10205110), (10, 8164088), (16, 5102555), (20, 4082044), (40, 2041022), (47, 1737040), (80, 1020511), (94, 868520), (188, 434260), (235, 347408), (376, 217130), (470, 173704), (752, 108565), (940, 86852), (1880, 43426), (3760, 21713)]