21463299

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:162

約数の個数: 80

約数和(自身を含む): 40249440

約数和(自身を除く): 18786141

約数列:

[1, 3, 9, 11, 13, 17, 27, 33, 39, 51, 81, 99, 109, 117, 143, 153, 187, 221, 297, 327, 351, 429, 459, 561, 663, 891, 981, 1053, 1199, 1287, 1377, 1417, 1683, 1853, 1989, 2431, 2943, 3597, 3861, 4251, 5049, 5559, 5967, 7293, 8829, 10791, 11583, 12753, 15147, 15587, 16677, 17901, 20383, 21879, 24089, 32373, 38259, 46761, 50031, 61149, 65637, 72267, 97119, 114777, 140283, 150093, 183447, 196911, 216801, 264979, 420849, 550341, 650403, 794937, 1262547, 1651023, 1951209, 2384811, 7154433, 21463299]

約数ペア:

[(1, 21463299), (3, 7154433), (9, 2384811), (11, 1951209), (13, 1651023), (17, 1262547), (27, 794937), (33, 650403), (39, 550341), (51, 420849), (81, 264979), (99, 216801), (109, 196911), (117, 183447), (143, 150093), (153, 140283), (187, 114777), (221, 97119), (297, 72267), (327, 65637), (351, 61149), (429, 50031), (459, 46761), (561, 38259), (663, 32373), (891, 24089), (981, 21879), (1053, 20383), (1199, 17901), (1287, 16677), (1377, 15587), (1417, 15147), (1683, 12753), (1853, 11583), (1989, 10791), (2431, 8829), (2943, 7293), (3597, 5967), (3861, 5559), (4251, 5049)]