20855718

素因数分解:

$2^1\times 3^5\times {\mathrm{13}}^1\times {\mathrm{3301}}^1$

素因数の和:3331

約数の個数: 48

約数和(自身を含む): 50480976

約数和(自身を除く): 29625258

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 234, 243, 351, 486, 702, 1053, 2106, 3159, 3301, 6318, 6602, 9903, 19806, 29709, 42913, 59418, 85826, 89127, 128739, 178254, 257478, 267381, 386217, 534762, 772434, 802143, 1158651, 1604286, 2317302, 3475953, 6951906, 10427859, 20855718]

約数ペア:

[(1, 20855718), (2, 10427859), (3, 6951906), (6, 3475953), (9, 2317302), (13, 1604286), (18, 1158651), (26, 802143), (27, 772434), (39, 534762), (54, 386217), (78, 267381), (81, 257478), (117, 178254), (162, 128739), (234, 89127), (243, 85826), (351, 59418), (486, 42913), (702, 29709), (1053, 19806), (2106, 9903), (3159, 6602), (3301, 6318)]