15964040

素因数分解:

$2^3\times 5^1\times {\mathrm{399101}}^1$

素因数の和:399112

約数の個数: 16

約数和(自身を含む): 35919180

約数和(自身を除く): 19955140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 399101, 798202, 1596404, 1995505, 3192808, 3991010, 7982020, 15964040]

約数ペア:

[(1, 15964040), (2, 7982020), (4, 3991010), (5, 3192808), (8, 1995505), (10, 1596404), (20, 798202), (40, 399101)]