21154049

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{3001}}^1$

素因数の和:3080

約数の個数: 16

約数和(自身を含む): 25937280

約数和(自身を除く): 4783231

約数列:

[1, 7, 19, 53, 133, 371, 1007, 3001, 7049, 21007, 57019, 159053, 399133, 1113371, 3022007, 21154049]

約数ペア:

[(1, 21154049), (7, 3022007), (19, 1113371), (53, 399133), (133, 159053), (371, 57019), (1007, 21007), (3001, 7049)]