21137776

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1447}}^1$

素因数の和:1549

約数の個数: 40

約数和(自身を含む): 45247104

約数和(自身を除く): 24109328

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 83, 88, 166, 176, 332, 664, 913, 1328, 1447, 1826, 2894, 3652, 5788, 7304, 11576, 14608, 15917, 23152, 31834, 63668, 120101, 127336, 240202, 254672, 480404, 960808, 1321111, 1921616, 2642222, 5284444, 10568888, 21137776]

約数ペア:

[(1, 21137776), (2, 10568888), (4, 5284444), (8, 2642222), (11, 1921616), (16, 1321111), (22, 960808), (44, 480404), (83, 254672), (88, 240202), (166, 127336), (176, 120101), (332, 63668), (664, 31834), (913, 23152), (1328, 15917), (1447, 14608), (1826, 11576), (2894, 7304), (3652, 5788)]