21907209

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{457}}^1$

素因数の和:537

約数の個数: 24

約数和(自身を含む): 31913440

約数和(自身を除く): 10006231

約数列:

[1, 3, 19, 29, 57, 87, 457, 551, 841, 1371, 1653, 2523, 8683, 13253, 15979, 26049, 39759, 47937, 251807, 384337, 755421, 1153011, 7302403, 21907209]

約数ペア:

[(1, 21907209), (3, 7302403), (19, 1153011), (29, 755421), (57, 384337), (87, 251807), (457, 47937), (551, 39759), (841, 26049), (1371, 15979), (1653, 13253), (2523, 8683)]