21720633

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{15307}}^1$

素因数の和:15364

約数の個数: 16

約数和(自身を含む): 32330496

約数和(自身を除く): 10609863

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 15307, 45921, 168377, 505131, 658201, 1974603, 7240211, 21720633]

約数ペア:

[(1, 21720633), (3, 7240211), (11, 1974603), (33, 658201), (43, 505131), (129, 168377), (473, 45921), (1419, 15307)]