388430025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{304651}}^1$

素因数の和:304681

約数の個数: 24

約数和(自身を含む): 679983264

約数和(自身を除く): 291553239

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 304651, 913953, 1523255, 4569765, 5179067, 7616275, 15537201, 22848825, 25895335, 77686005, 129476675, 388430025]

約数ペア:

[(1, 388430025), (3, 129476675), (5, 77686005), (15, 25895335), (17, 22848825), (25, 15537201), (51, 7616275), (75, 5179067), (85, 4569765), (255, 1523255), (425, 913953), (1275, 304651)]