20865285

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{66239}}^1$

素因数の和:66257

約数の個数: 24

約数和(自身を含む): 41333760

約数和(自身を除く): 20468475

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 66239, 198717, 331195, 463673, 596151, 993585, 1391019, 2318365, 2980755, 4173057, 6955095, 20865285]

約数ペア:

[(1, 20865285), (3, 6955095), (5, 4173057), (7, 2980755), (9, 2318365), (15, 1391019), (21, 993585), (35, 596151), (45, 463673), (63, 331195), (105, 198717), (315, 66239)]