20899179

素因数分解:

$3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1667}}^1$

素因数の和:1879

約数の個数: 24

約数和(自身を含む): 34694400

約数和(自身を除く): 13795221

約数列:

[1, 3, 7, 9, 21, 63, 199, 597, 1393, 1667, 1791, 4179, 5001, 11669, 12537, 15003, 35007, 105021, 331733, 995199, 2322131, 2985597, 6966393, 20899179]

約数ペア:

[(1, 20899179), (3, 6966393), (7, 2985597), (9, 2322131), (21, 995199), (63, 331733), (199, 105021), (597, 35007), (1393, 15003), (1667, 12537), (1791, 11669), (4179, 5001)]