21376509

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{3191}}^1$

素因数の和:3241

約数の個数: 32

約数和(自身を含む): 36771840

約数和(自身を除く): 15395331

約数列:

[1, 3, 7, 11, 21, 29, 33, 77, 87, 203, 231, 319, 609, 957, 2233, 3191, 6699, 9573, 22337, 35101, 67011, 92539, 105303, 245707, 277617, 647773, 737121, 1017929, 1943319, 3053787, 7125503, 21376509]

約数ペア:

[(1, 21376509), (3, 7125503), (7, 3053787), (11, 1943319), (21, 1017929), (29, 737121), (33, 647773), (77, 277617), (87, 245707), (203, 105303), (231, 92539), (319, 67011), (609, 35101), (957, 22337), (2233, 9573), (3191, 6699)]