21447998

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3947}}^1$

素因数の和:3992

約数の個数: 32

約数和(自身を含む): 39795840

約数和(自身を除く): 18347842

約数列:

[1, 2, 11, 13, 19, 22, 26, 38, 143, 209, 247, 286, 418, 494, 2717, 3947, 5434, 7894, 43417, 51311, 74993, 86834, 102622, 149986, 564421, 824923, 974909, 1128842, 1649846, 1949818, 10723999, 21447998]

約数ペア:

[(1, 21447998), (2, 10723999), (11, 1949818), (13, 1649846), (19, 1128842), (22, 974909), (26, 824923), (38, 564421), (143, 149986), (209, 102622), (247, 86834), (286, 74993), (418, 51311), (494, 43417), (2717, 7894), (3947, 5434)]