18729080

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10889}}^1$

素因数の和:10943

約数の個数: 32

約数和(自身を含む): 43124400

約数和(自身を除く): 24395320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10889, 21778, 43556, 54445, 87112, 108890, 217780, 435560, 468227, 936454, 1872908, 2341135, 3745816, 4682270, 9364540, 18729080]

約数ペア:

[(1, 18729080), (2, 9364540), (4, 4682270), (5, 3745816), (8, 2341135), (10, 1872908), (20, 936454), (40, 468227), (43, 435560), (86, 217780), (172, 108890), (215, 87112), (344, 54445), (430, 43556), (860, 21778), (1720, 10889)]