21528509728

素因数分解:

$2^5\times {\mathrm{11}}^3\times {\mathrm{505459}}^1$

素因数の和:505502

約数の個数: 48

約数和(自身を含む): 46619586720

約数和(自身を除く): 25091076992

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 121, 176, 242, 352, 484, 968, 1331, 1936, 2662, 3872, 5324, 10648, 21296, 42592, 505459, 1010918, 2021836, 4043672, 5560049, 8087344, 11120098, 16174688, 22240196, 44480392, 61160539, 88960784, 122321078, 177921568, 244642156, 489284312, 672765929, 978568624, 1345531858, 1957137248, 2691063716, 5382127432, 10764254864, 21528509728]

約数ペア:

[(1, 21528509728), (2, 10764254864), (4, 5382127432), (8, 2691063716), (11, 1957137248), (16, 1345531858), (22, 978568624), (32, 672765929), (44, 489284312), (88, 244642156), (121, 177921568), (176, 122321078), (242, 88960784), (352, 61160539), (484, 44480392), (968, 22240196), (1331, 16174688), (1936, 11120098), (2662, 8087344), (3872, 5560049), (5324, 4043672), (10648, 2021836), (21296, 1010918), (42592, 505459)]