179660020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{208907}}^1$

素因数の和:208959

約数の個数: 24

約数和(自身を含む): 386061984

約数和(自身を除く): 206401964

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 208907, 417814, 835628, 1044535, 2089070, 4178140, 8983001, 17966002, 35932004, 44915005, 89830010, 179660020]

約数ペア:

[(1, 179660020), (2, 89830010), (4, 44915005), (5, 35932004), (10, 17966002), (20, 8983001), (43, 4178140), (86, 2089070), (172, 1044535), (215, 835628), (430, 417814), (860, 208907)]