128595920

素因数分解:

$2^4\times 5^1\times {\mathrm{1607449}}^1$

素因数の和:1607462

約数の個数: 20

約数和(自身を含む): 298985700

約数和(自身を除く): 170389780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1607449, 3214898, 6429796, 8037245, 12859592, 16074490, 25719184, 32148980, 64297960, 128595920]

約数ペア:

[(1, 128595920), (2, 64297960), (4, 32148980), (5, 25719184), (8, 16074490), (10, 12859592), (16, 8037245), (20, 6429796), (40, 3214898), (80, 1607449)]