721817125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{971}}^1$

素因数の和:1318

約数の個数: 32

約数和(自身を含む): 952248960

約数和(自身を除く): 230431835

約数列:

[1, 5, 19, 25, 95, 125, 313, 475, 971, 1565, 2375, 4855, 5947, 7825, 18449, 24275, 29735, 39125, 92245, 121375, 148675, 303923, 461225, 743375, 1519615, 2306125, 5774537, 7598075, 28872685, 37990375, 144363425, 721817125]

約数ペア:

[(1, 721817125), (5, 144363425), (19, 37990375), (25, 28872685), (95, 7598075), (125, 5774537), (313, 2306125), (475, 1519615), (971, 743375), (1565, 461225), (2375, 303923), (4855, 148675), (5947, 121375), (7825, 92245), (18449, 39125), (24275, 29735)]