691821

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{73}}^1$

素因数の和:104

約数の個数: 28

約数和(自身を含む): 1132348

約数和(自身を除く): 440527

約数列:

[1, 3, 9, 13, 27, 39, 73, 81, 117, 219, 243, 351, 657, 729, 949, 1053, 1971, 2847, 3159, 5913, 8541, 9477, 17739, 25623, 53217, 76869, 230607, 691821]

約数ペア:

[(1, 691821), (3, 230607), (9, 76869), (13, 53217), (27, 25623), (39, 17739), (73, 9477), (81, 8541), (117, 5913), (219, 3159), (243, 2847), (351, 1971), (657, 1053), (729, 949)]