19910121

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1759}}^1$

素因数の和:1794

約数の個数: 32

約数和(自身を含む): 33792000

約数和(自身を除く): 13881879

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 343, 539, 1029, 1617, 1759, 3773, 5277, 11319, 12313, 19349, 36939, 58047, 86191, 135443, 258573, 406329, 603337, 948101, 1810011, 2844303, 6636707, 19910121]

約数ペア:

[(1, 19910121), (3, 6636707), (7, 2844303), (11, 1810011), (21, 948101), (33, 603337), (49, 406329), (77, 258573), (147, 135443), (231, 86191), (343, 58047), (539, 36939), (1029, 19349), (1617, 12313), (1759, 11319), (3773, 5277)]