18866601

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:108

約数の個数: 80

約数和(自身を含む): 34151040

約数和(自身を除く): 15284439

約数列:

[1, 3, 9, 13, 19, 23, 27, 39, 41, 57, 69, 81, 117, 123, 171, 207, 247, 299, 351, 369, 437, 513, 533, 621, 741, 779, 897, 943, 1053, 1107, 1311, 1539, 1599, 1863, 2223, 2337, 2691, 2829, 3321, 3933, 4797, 5681, 6669, 7011, 8073, 8487, 10127, 11799, 12259, 14391, 17043, 17917, 20007, 21033, 24219, 25461, 30381, 35397, 36777, 43173, 51129, 53751, 63099, 76383, 91143, 110331, 153387, 161253, 232921, 273429, 330993, 460161, 483759, 698763, 820287, 992979, 1451277, 2096289, 6288867, 18866601]

約数ペア:

[(1, 18866601), (3, 6288867), (9, 2096289), (13, 1451277), (19, 992979), (23, 820287), (27, 698763), (39, 483759), (41, 460161), (57, 330993), (69, 273429), (81, 232921), (117, 161253), (123, 153387), (171, 110331), (207, 91143), (247, 76383), (299, 63099), (351, 53751), (369, 51129), (437, 43173), (513, 36777), (533, 35397), (621, 30381), (741, 25461), (779, 24219), (897, 21033), (943, 20007), (1053, 17917), (1107, 17043), (1311, 14391), (1539, 12259), (1599, 11799), (1863, 10127), (2223, 8487), (2337, 8073), (2691, 7011), (2829, 6669), (3321, 5681), (3933, 4797)]