28687197

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 49280832

約数和(自身を除く): 20593635

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 113, 147, 157, 231, 339, 471, 539, 791, 1099, 1243, 1617, 1727, 2373, 3297, 3729, 5181, 5537, 7693, 8701, 12089, 16611, 17741, 23079, 26103, 36267, 53223, 60907, 84623, 124187, 182721, 195151, 253869, 372561, 585453, 869309, 1366057, 2607927, 4098171, 9562399, 28687197]

約数ペア:

[(1, 28687197), (3, 9562399), (7, 4098171), (11, 2607927), (21, 1366057), (33, 869309), (49, 585453), (77, 372561), (113, 253869), (147, 195151), (157, 182721), (231, 124187), (339, 84623), (471, 60907), (539, 53223), (791, 36267), (1099, 26103), (1243, 23079), (1617, 17741), (1727, 16611), (2373, 12089), (3297, 8701), (3729, 7693), (5181, 5537)]