428139

素因数分解:

$3^3\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 16

約数和(自身を含む): 644640

約数和(自身を除く): 216501

約数列:

[1, 3, 9, 27, 101, 157, 303, 471, 909, 1413, 2727, 4239, 15857, 47571, 142713, 428139]

約数ペア:

[(1, 428139), (3, 142713), (9, 47571), (27, 15857), (101, 4239), (157, 2727), (303, 1413), (471, 909)]