20886220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25471}}^1$

素因数の和:25521

約数の個数: 24

約数和(自身を含む): 44932608

約数和(自身を除く): 24046388

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25471, 50942, 101884, 127355, 254710, 509420, 1044311, 2088622, 4177244, 5221555, 10443110, 20886220]

約数ペア:

[(1, 20886220), (2, 10443110), (4, 5221555), (5, 4177244), (10, 2088622), (20, 1044311), (41, 509420), (82, 254710), (164, 127355), (205, 101884), (410, 50942), (820, 25471)]