21569680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:344

約数の個数: 80

約数和(自身を含む): 55425024

約数和(自身を除く): 33855344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 127, 176, 193, 220, 254, 386, 440, 508, 635, 772, 880, 965, 1016, 1270, 1397, 1544, 1930, 2032, 2123, 2540, 2794, 3088, 3860, 4246, 5080, 5588, 6985, 7720, 8492, 10160, 10615, 11176, 13970, 15440, 16984, 21230, 22352, 24511, 27940, 33968, 42460, 49022, 55880, 84920, 98044, 111760, 122555, 169840, 196088, 245110, 269621, 392176, 490220, 539242, 980440, 1078484, 1348105, 1960880, 2156968, 2696210, 4313936, 5392420, 10784840, 21569680]

約数ペア:

[(1, 21569680), (2, 10784840), (4, 5392420), (5, 4313936), (8, 2696210), (10, 2156968), (11, 1960880), (16, 1348105), (20, 1078484), (22, 980440), (40, 539242), (44, 490220), (55, 392176), (80, 269621), (88, 245110), (110, 196088), (127, 169840), (176, 122555), (193, 111760), (220, 98044), (254, 84920), (386, 55880), (440, 49022), (508, 42460), (635, 33968), (772, 27940), (880, 24511), (965, 22352), (1016, 21230), (1270, 16984), (1397, 15440), (1544, 13970), (1930, 11176), (2032, 10615), (2123, 10160), (2540, 8492), (2794, 7720), (3088, 6985), (3860, 5588), (4246, 5080)]