21084889

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2687}}^1$

素因数の和:2772

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 4719911

約数列:

[1, 7, 19, 59, 133, 413, 1121, 2687, 7847, 18809, 51053, 158533, 357371, 1109731, 3012127, 21084889]

約数ペア:

[(1, 21084889), (7, 3012127), (19, 1109731), (59, 357371), (133, 158533), (413, 51053), (1121, 18809), (2687, 7847)]