19420317

素因数分解:

$3^5\times 7^3\times {\mathrm{233}}^1$

素因数の和:269

約数の個数: 48

約数和(自身を含む): 34070400

約数和(自身を除く): 14650083

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 233, 243, 343, 441, 567, 699, 1029, 1323, 1631, 1701, 2097, 3087, 3969, 4893, 6291, 9261, 11417, 11907, 14679, 18873, 27783, 34251, 44037, 56619, 79919, 83349, 102753, 132111, 239757, 308259, 396333, 719271, 924777, 2157813, 2774331, 6473439, 19420317]

約数ペア:

[(1, 19420317), (3, 6473439), (7, 2774331), (9, 2157813), (21, 924777), (27, 719271), (49, 396333), (63, 308259), (81, 239757), (147, 132111), (189, 102753), (233, 83349), (243, 79919), (343, 56619), (441, 44037), (567, 34251), (699, 27783), (1029, 18873), (1323, 14679), (1631, 11907), (1701, 11417), (2097, 9261), (3087, 6291), (3969, 4893)]