19923057

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^2$

素因数の和:108

約数の個数: 72

約数和(自身を含む): 38495520

約数和(自身を除く): 18572463

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 37, 49, 63, 77, 99, 111, 147, 189, 231, 259, 297, 333, 407, 441, 539, 693, 777, 999, 1221, 1323, 1369, 1617, 1813, 2079, 2331, 2849, 3663, 4107, 4851, 5439, 6993, 8547, 9583, 10989, 12321, 14553, 15059, 16317, 19943, 25641, 28749, 36963, 45177, 48951, 59829, 67081, 76923, 86247, 105413, 135531, 179487, 201243, 258741, 316239, 406593, 538461, 603729, 737891, 948717, 1811187, 2213673, 2846151, 6641019, 19923057]

約数ペア:

[(1, 19923057), (3, 6641019), (7, 2846151), (9, 2213673), (11, 1811187), (21, 948717), (27, 737891), (33, 603729), (37, 538461), (49, 406593), (63, 316239), (77, 258741), (99, 201243), (111, 179487), (147, 135531), (189, 105413), (231, 86247), (259, 76923), (297, 67081), (333, 59829), (407, 48951), (441, 45177), (539, 36963), (693, 28749), (777, 25641), (999, 19943), (1221, 16317), (1323, 15059), (1369, 14553), (1617, 12321), (1813, 10989), (2079, 9583), (2331, 8547), (2849, 6993), (3663, 5439), (4107, 4851)]