206145

素因数分解:

$3^4\times 5^1\times {\mathrm{509}}^1$

素因数の和:526

約数の個数: 20

約数和(自身を含む): 370260

約数和(自身を除く): 164115

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 509, 1527, 2545, 4581, 7635, 13743, 22905, 41229, 68715, 206145]

約数ペア:

[(1, 206145), (3, 68715), (5, 41229), (9, 22905), (15, 13743), (27, 7635), (45, 4581), (81, 2545), (135, 1527), (405, 509)]