20817104

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:364

約数の個数: 80

約数和(自身を含む): 51294336

約数和(自身を除く): 30477232

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 61, 77, 88, 112, 122, 154, 176, 244, 277, 308, 427, 488, 554, 616, 671, 854, 976, 1108, 1232, 1342, 1708, 1939, 2216, 2684, 3047, 3416, 3878, 4432, 4697, 5368, 6094, 6832, 7756, 9394, 10736, 12188, 15512, 16897, 18788, 21329, 24376, 31024, 33794, 37576, 42658, 48752, 67588, 75152, 85316, 118279, 135176, 170632, 185867, 236558, 270352, 341264, 371734, 473116, 743468, 946232, 1301069, 1486936, 1892464, 2602138, 2973872, 5204276, 10408552, 20817104]

約数ペア:

[(1, 20817104), (2, 10408552), (4, 5204276), (7, 2973872), (8, 2602138), (11, 1892464), (14, 1486936), (16, 1301069), (22, 946232), (28, 743468), (44, 473116), (56, 371734), (61, 341264), (77, 270352), (88, 236558), (112, 185867), (122, 170632), (154, 135176), (176, 118279), (244, 85316), (277, 75152), (308, 67588), (427, 48752), (488, 42658), (554, 37576), (616, 33794), (671, 31024), (854, 24376), (976, 21329), (1108, 18788), (1232, 16897), (1342, 15512), (1708, 12188), (1939, 10736), (2216, 9394), (2684, 7756), (3047, 6832), (3416, 6094), (3878, 5368), (4432, 4697)]