21563822

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 40807440

約数和(自身を除く): 19243618

約数列:

[1, 2, 7, 14, 19, 37, 38, 49, 74, 98, 133, 259, 266, 313, 518, 626, 703, 931, 1406, 1813, 1862, 2191, 3626, 4382, 4921, 5947, 9842, 11581, 11894, 15337, 23162, 30674, 34447, 41629, 68894, 81067, 83258, 162134, 220039, 291403, 440078, 567469, 582806, 1134938, 1540273, 3080546, 10781911, 21563822]

約数ペア:

[(1, 21563822), (2, 10781911), (7, 3080546), (14, 1540273), (19, 1134938), (37, 582806), (38, 567469), (49, 440078), (74, 291403), (98, 220039), (133, 162134), (259, 83258), (266, 81067), (313, 68894), (518, 41629), (626, 34447), (703, 30674), (931, 23162), (1406, 15337), (1813, 11894), (1862, 11581), (2191, 9842), (3626, 5947), (4382, 4921)]