21247719

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{8669}}^1$

素因数の和:8734

約数の個数: 16

約数和(自身を含む): 30518400

約数和(自身を除く): 9270681

約数列:

[1, 3, 19, 43, 57, 129, 817, 2451, 8669, 26007, 164711, 372767, 494133, 1118301, 7082573, 21247719]

約数ペア:

[(1, 21247719), (3, 7082573), (19, 1118301), (43, 494133), (57, 372767), (129, 164711), (817, 26007), (2451, 8669)]