51550317

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{20981}}^1$

素因数の和:21010

約数の個数: 32

約数和(自身を含む): 93999360

約数和(自身を除く): 42449043

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 20981, 62943, 146867, 188829, 272753, 440601, 566487, 818259, 1321803, 1909271, 2454777, 3965409, 5727813, 7364331, 17183439, 51550317]

約数ペア:

[(1, 51550317), (3, 17183439), (7, 7364331), (9, 5727813), (13, 3965409), (21, 2454777), (27, 1909271), (39, 1321803), (63, 818259), (91, 566487), (117, 440601), (189, 272753), (273, 188829), (351, 146867), (819, 62943), (2457, 20981)]