640268385

素因数分解:

$3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{440047}}^1$

素因数の和:440152

約数の個数: 16

約数和(自身を含む): 1034992896

約数和(自身を除く): 394724511

約数列:

[1, 3, 5, 15, 97, 291, 485, 1455, 440047, 1320141, 2200235, 6600705, 42684559, 128053677, 213422795, 640268385]

約数ペア:

[(1, 640268385), (3, 213422795), (5, 128053677), (15, 42684559), (97, 6600705), (291, 2200235), (485, 1320141), (1455, 440047)]