256365

素因数分解:

$3^5\times 5^1\times {\mathrm{211}}^1$

素因数の和:231

約数の個数: 24

約数和(自身を含む): 463008

約数和(自身を除く): 206643

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 211, 243, 405, 633, 1055, 1215, 1899, 3165, 5697, 9495, 17091, 28485, 51273, 85455, 256365]

約数ペア:

[(1, 256365), (3, 85455), (5, 51273), (9, 28485), (15, 17091), (27, 9495), (45, 5697), (81, 3165), (135, 1899), (211, 1215), (243, 1055), (405, 633)]