18123777

素因数分解:

$3^3\times 7^3\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:152

約数の個数: 64

約数和(自身を含む): 33280000

約数和(自身を除く): 15156223

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 103, 133, 147, 171, 189, 309, 343, 399, 441, 513, 721, 927, 931, 1029, 1197, 1323, 1957, 2163, 2781, 2793, 3087, 3591, 5047, 5871, 6489, 6517, 8379, 9261, 13699, 15141, 17613, 19467, 19551, 25137, 35329, 41097, 45423, 52839, 58653, 95893, 105987, 123291, 136269, 175959, 287679, 317961, 369873, 671251, 863037, 953883, 2013753, 2589111, 6041259, 18123777]

約数ペア:

[(1, 18123777), (3, 6041259), (7, 2589111), (9, 2013753), (19, 953883), (21, 863037), (27, 671251), (49, 369873), (57, 317961), (63, 287679), (103, 175959), (133, 136269), (147, 123291), (171, 105987), (189, 95893), (309, 58653), (343, 52839), (399, 45423), (441, 41097), (513, 35329), (721, 25137), (927, 19551), (931, 19467), (1029, 17613), (1197, 15141), (1323, 13699), (1957, 9261), (2163, 8379), (2781, 6517), (2793, 6489), (3087, 5871), (3591, 5047)]