20679561

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2203}}^1$

素因数の和:2365

約数の個数: 24

約数和(自身を含む): 34382400

約数和(自身を除く): 13702839

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 2203, 3129, 6609, 9387, 15421, 19827, 46263, 138789, 328247, 984741, 2297729, 2954223, 6893187, 20679561]

約数ペア:

[(1, 20679561), (3, 6893187), (7, 2954223), (9, 2297729), (21, 984741), (63, 328247), (149, 138789), (447, 46263), (1043, 19827), (1341, 15421), (2203, 9387), (3129, 6609)]