20731756815

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{664799}}^1$

素因数の和:664834

約数の個数: 80

約数和(自身を含む): 46333900800

約数和(自身を除く): 25602143985

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 81, 99, 105, 135, 165, 189, 231, 297, 315, 385, 405, 495, 567, 693, 891, 945, 1155, 1485, 2079, 2835, 3465, 4455, 6237, 10395, 31185, 664799, 1994397, 3323995, 4653593, 5983191, 7312789, 9971985, 13960779, 17949573, 21938367, 23267965, 29915955, 36563945, 41882337, 51189523, 53848719, 65815101, 69803895, 89747865, 109691835, 125647011, 153568569, 197445303, 209411685, 255947615, 269243595, 329075505, 376941033, 460705707, 592335909, 628235055, 767842845, 987226515, 1382117121, 1884705165, 2303528535, 2961679545, 4146351363, 6910585605, 20731756815]

約数ペア:

[(1, 20731756815), (3, 6910585605), (5, 4146351363), (7, 2961679545), (9, 2303528535), (11, 1884705165), (15, 1382117121), (21, 987226515), (27, 767842845), (33, 628235055), (35, 592335909), (45, 460705707), (55, 376941033), (63, 329075505), (77, 269243595), (81, 255947615), (99, 209411685), (105, 197445303), (135, 153568569), (165, 125647011), (189, 109691835), (231, 89747865), (297, 69803895), (315, 65815101), (385, 53848719), (405, 51189523), (495, 41882337), (567, 36563945), (693, 29915955), (891, 23267965), (945, 21938367), (1155, 17949573), (1485, 13960779), (2079, 9971985), (2835, 7312789), (3465, 5983191), (4455, 4653593), (6237, 3323995), (10395, 1994397), (31185, 664799)]