21399147

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:150

約数の個数: 80

約数和(自身を含む): 41260032

約数和(自身を除く): 19860885

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 47, 63, 73, 77, 81, 99, 141, 189, 219, 231, 297, 329, 423, 511, 517, 567, 657, 693, 803, 891, 987, 1269, 1533, 1551, 1971, 2079, 2409, 2961, 3431, 3619, 3807, 4599, 4653, 5621, 5913, 6237, 7227, 8883, 10293, 10857, 13797, 13959, 16863, 21681, 24017, 26649, 30879, 32571, 37741, 41391, 41877, 50589, 65043, 72051, 92637, 97713, 113223, 151767, 216153, 264187, 277911, 293139, 339669, 455301, 648459, 792561, 1019007, 1945377, 2377683, 3057021, 7133049, 21399147]

約数ペア:

[(1, 21399147), (3, 7133049), (7, 3057021), (9, 2377683), (11, 1945377), (21, 1019007), (27, 792561), (33, 648459), (47, 455301), (63, 339669), (73, 293139), (77, 277911), (81, 264187), (99, 216153), (141, 151767), (189, 113223), (219, 97713), (231, 92637), (297, 72051), (329, 65043), (423, 50589), (511, 41877), (517, 41391), (567, 37741), (657, 32571), (693, 30879), (803, 26649), (891, 24017), (987, 21681), (1269, 16863), (1533, 13959), (1551, 13797), (1971, 10857), (2079, 10293), (2409, 8883), (2961, 7227), (3431, 6237), (3619, 5913), (3807, 5621), (4599, 4653)]