20497561

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{673}}^1$

素因数の和:928

約数の個数: 16

約数和(自身を含む): 24803200

約数和(自身を除く): 4305639

約数列:

[1, 7, 19, 133, 229, 673, 1603, 4351, 4711, 12787, 30457, 89509, 154117, 1078819, 2928223, 20497561]

約数ペア:

[(1, 20497561), (7, 2928223), (19, 1078819), (133, 154117), (229, 89509), (673, 30457), (1603, 12787), (4351, 4711)]