21511248

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:464

約数の個数: 80

約数和(自身を含む): 61281792

約数和(自身を除く): 39770544

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 131, 132, 176, 262, 264, 311, 393, 524, 528, 622, 786, 933, 1048, 1244, 1441, 1572, 1866, 2096, 2488, 2882, 3144, 3421, 3732, 4323, 4976, 5764, 6288, 6842, 7464, 8646, 10263, 11528, 13684, 14928, 17292, 20526, 23056, 27368, 34584, 40741, 41052, 54736, 69168, 81482, 82104, 122223, 162964, 164208, 244446, 325928, 448151, 488892, 651856, 896302, 977784, 1344453, 1792604, 1955568, 2688906, 3585208, 5377812, 7170416, 10755624, 21511248]

約数ペア:

[(1, 21511248), (2, 10755624), (3, 7170416), (4, 5377812), (6, 3585208), (8, 2688906), (11, 1955568), (12, 1792604), (16, 1344453), (22, 977784), (24, 896302), (33, 651856), (44, 488892), (48, 448151), (66, 325928), (88, 244446), (131, 164208), (132, 162964), (176, 122223), (262, 82104), (264, 81482), (311, 69168), (393, 54736), (524, 41052), (528, 40741), (622, 34584), (786, 27368), (933, 23056), (1048, 20526), (1244, 17292), (1441, 14928), (1572, 13684), (1866, 11528), (2096, 10263), (2488, 8646), (2882, 7464), (3144, 6842), (3421, 6288), (3732, 5764), (4323, 4976)]