399546325

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{21863}}^1$

素因数の和:21933

約数の個数: 24

約数和(自身を含む): 536804928

約数和(自身を除く): 137258603

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 1075, 3655, 18275, 21863, 109315, 371671, 546575, 940109, 1858355, 4700545, 9291775, 15981853, 23502725, 79909265, 399546325]

約数ペア:

[(1, 399546325), (5, 79909265), (17, 23502725), (25, 15981853), (43, 9291775), (85, 4700545), (215, 1858355), (425, 940109), (731, 546575), (1075, 371671), (3655, 109315), (18275, 21863)]