21615363

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 41149440

約数和(自身を除く): 19534077

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 37, 63, 77, 99, 111, 189, 231, 259, 281, 297, 333, 407, 693, 777, 843, 999, 1221, 1967, 2079, 2331, 2529, 2849, 3091, 3663, 5901, 6993, 7587, 8547, 9273, 10397, 10989, 17703, 21637, 25641, 27819, 31191, 53109, 64911, 72779, 76923, 83457, 93573, 114367, 194733, 218337, 280719, 343101, 584199, 655011, 800569, 1029303, 1965033, 2401707, 3087909, 7205121, 21615363]

約数ペア:

[(1, 21615363), (3, 7205121), (7, 3087909), (9, 2401707), (11, 1965033), (21, 1029303), (27, 800569), (33, 655011), (37, 584199), (63, 343101), (77, 280719), (99, 218337), (111, 194733), (189, 114367), (231, 93573), (259, 83457), (281, 76923), (297, 72779), (333, 64911), (407, 53109), (693, 31191), (777, 27819), (843, 25641), (999, 21637), (1221, 17703), (1967, 10989), (2079, 10397), (2331, 9273), (2529, 8547), (2849, 7587), (3091, 6993), (3663, 5901)]