2505321

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:75

約数の個数: 72

約数和(自身を含む): 4979520

約数和(自身を除く): 2474199

約数列:

[1, 3, 7, 9, 13, 19, 21, 23, 39, 49, 57, 63, 69, 91, 117, 133, 147, 161, 171, 207, 247, 273, 299, 399, 437, 441, 483, 637, 741, 819, 897, 931, 1127, 1197, 1311, 1449, 1729, 1911, 2093, 2223, 2691, 2793, 3059, 3381, 3933, 5187, 5681, 5733, 6279, 8379, 9177, 10143, 12103, 14651, 15561, 17043, 18837, 21413, 27531, 36309, 39767, 43953, 51129, 64239, 108927, 119301, 131859, 192717, 278369, 357903, 835107, 2505321]

約数ペア:

[(1, 2505321), (3, 835107), (7, 357903), (9, 278369), (13, 192717), (19, 131859), (21, 119301), (23, 108927), (39, 64239), (49, 51129), (57, 43953), (63, 39767), (69, 36309), (91, 27531), (117, 21413), (133, 18837), (147, 17043), (161, 15561), (171, 14651), (207, 12103), (247, 10143), (273, 9177), (299, 8379), (399, 6279), (437, 5733), (441, 5681), (483, 5187), (637, 3933), (741, 3381), (819, 3059), (897, 2793), (931, 2691), (1127, 2223), (1197, 2093), (1311, 1911), (1449, 1729)]