20411556

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{647}}^1$

素因数の和:904

約数の個数: 48

約数和(自身を含む): 52254720

約数和(自身を除く): 31843164

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 239, 478, 647, 717, 956, 1294, 1434, 1941, 2588, 2629, 2868, 3882, 5258, 7117, 7764, 7887, 10516, 14234, 15774, 21351, 28468, 31548, 42702, 85404, 154633, 309266, 463899, 618532, 927798, 1700963, 1855596, 3401926, 5102889, 6803852, 10205778, 20411556]

約数ペア:

[(1, 20411556), (2, 10205778), (3, 6803852), (4, 5102889), (6, 3401926), (11, 1855596), (12, 1700963), (22, 927798), (33, 618532), (44, 463899), (66, 309266), (132, 154633), (239, 85404), (478, 42702), (647, 31548), (717, 28468), (956, 21351), (1294, 15774), (1434, 14234), (1941, 10516), (2588, 7887), (2629, 7764), (2868, 7117), (3882, 5258)]