31959440

素因数分解:

$2^4\times 5^1\times {\mathrm{399493}}^1$

素因数の和:399506

約数の個数: 20

約数和(自身を含む): 74305884

約数和(自身を除く): 42346444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 399493, 798986, 1597972, 1997465, 3195944, 3994930, 6391888, 7989860, 15979720, 31959440]

約数ペア:

[(1, 31959440), (2, 15979720), (4, 7989860), (5, 6391888), (8, 3994930), (10, 3195944), (16, 1997465), (20, 1597972), (40, 798986), (80, 399493)]