20406645

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{64783}}^1$

素因数の和:64801

約数の個数: 24

約数和(自身を含む): 40425216

約数和(自身を除く): 20018571

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 64783, 194349, 323915, 453481, 583047, 971745, 1360443, 2267405, 2915235, 4081329, 6802215, 20406645]

約数ペア:

[(1, 20406645), (3, 6802215), (5, 4081329), (7, 2915235), (9, 2267405), (15, 1360443), (21, 971745), (35, 583047), (45, 453481), (63, 323915), (105, 194349), (315, 64783)]