20289808

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{383}}^1$

素因数の和:452

約数の個数: 80

約数和(自身を含む): 50282496

約数和(自身を除く): 29992688

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 43, 44, 56, 77, 86, 88, 112, 154, 172, 176, 301, 308, 344, 383, 473, 602, 616, 688, 766, 946, 1204, 1232, 1532, 1892, 2408, 2681, 3064, 3311, 3784, 4213, 4816, 5362, 6128, 6622, 7568, 8426, 10724, 13244, 16469, 16852, 21448, 26488, 29491, 32938, 33704, 42896, 52976, 58982, 65876, 67408, 115283, 117964, 131752, 181159, 230566, 235928, 263504, 362318, 461132, 471856, 724636, 922264, 1268113, 1449272, 1844528, 2536226, 2898544, 5072452, 10144904, 20289808]

約数ペア:

[(1, 20289808), (2, 10144904), (4, 5072452), (7, 2898544), (8, 2536226), (11, 1844528), (14, 1449272), (16, 1268113), (22, 922264), (28, 724636), (43, 471856), (44, 461132), (56, 362318), (77, 263504), (86, 235928), (88, 230566), (112, 181159), (154, 131752), (172, 117964), (176, 115283), (301, 67408), (308, 65876), (344, 58982), (383, 52976), (473, 42896), (602, 33704), (616, 32938), (688, 29491), (766, 26488), (946, 21448), (1204, 16852), (1232, 16469), (1532, 13244), (1892, 10724), (2408, 8426), (2681, 7568), (3064, 6622), (3311, 6128), (3784, 5362), (4213, 4816)]