21069477

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:160

約数の個数: 80

約数和(自身を含む): 39517632

約数和(自身を除く): 18448155

約数列:

[1, 3, 9, 11, 13, 17, 27, 33, 39, 51, 81, 99, 107, 117, 143, 153, 187, 221, 297, 321, 351, 429, 459, 561, 663, 891, 963, 1053, 1177, 1287, 1377, 1391, 1683, 1819, 1989, 2431, 2889, 3531, 3861, 4173, 5049, 5457, 5967, 7293, 8667, 10593, 11583, 12519, 15147, 15301, 16371, 17901, 20009, 21879, 23647, 31779, 37557, 45903, 49113, 60027, 65637, 70941, 95337, 112671, 137709, 147339, 180081, 196911, 212823, 260117, 413127, 540243, 638469, 780351, 1239381, 1620729, 1915407, 2341053, 7023159, 21069477]

約数ペア:

[(1, 21069477), (3, 7023159), (9, 2341053), (11, 1915407), (13, 1620729), (17, 1239381), (27, 780351), (33, 638469), (39, 540243), (51, 413127), (81, 260117), (99, 212823), (107, 196911), (117, 180081), (143, 147339), (153, 137709), (187, 112671), (221, 95337), (297, 70941), (321, 65637), (351, 60027), (429, 49113), (459, 45903), (561, 37557), (663, 31779), (891, 23647), (963, 21879), (1053, 20009), (1177, 17901), (1287, 16371), (1377, 15301), (1391, 15147), (1683, 12519), (1819, 11583), (1989, 10593), (2431, 8667), (2889, 7293), (3531, 5967), (3861, 5457), (4173, 5049)]