15920440

素因数分解:

$2^3\times 5^1\times {\mathrm{398011}}^1$

素因数の和:398022

約数の個数: 16

約数和(自身を含む): 35821080

約数和(自身を除く): 19900640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 398011, 796022, 1592044, 1990055, 3184088, 3980110, 7960220, 15920440]

約数ペア:

[(1, 15920440), (2, 7960220), (4, 3980110), (5, 3184088), (8, 1990055), (10, 1592044), (20, 796022), (40, 398011)]