18912560

素因数分解:

$2^4\times 5^1\times {\mathrm{236407}}^1$

素因数の和:236420

約数の個数: 20

約数和(自身を含む): 43971888

約数和(自身を除く): 25059328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236407, 472814, 945628, 1182035, 1891256, 2364070, 3782512, 4728140, 9456280, 18912560]

約数ペア:

[(1, 18912560), (2, 9456280), (4, 4728140), (5, 3782512), (8, 2364070), (10, 1891256), (16, 1182035), (20, 945628), (40, 472814), (80, 236407)]