21455427

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53773}}^1$

素因数の和:53802

約数の個数: 16

約数和(自身を含む): 34415360

約数和(自身を除く): 12959933

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53773, 161319, 376411, 1021687, 1129233, 3065061, 7151809, 21455427]

約数ペア:

[(1, 21455427), (3, 7151809), (7, 3065061), (19, 1129233), (21, 1021687), (57, 376411), (133, 161319), (399, 53773)]