80453020

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{21061}}^1$

素因数の和:21261

約数の個数: 24

約数和(自身を含む): 169843968

約数和(自身を除く): 89390948

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 21061, 42122, 84244, 105305, 210610, 421220, 4022651, 8045302, 16090604, 20113255, 40226510, 80453020]

約数ペア:

[(1, 80453020), (2, 40226510), (4, 20113255), (5, 16090604), (10, 8045302), (20, 4022651), (191, 421220), (382, 210610), (764, 105305), (955, 84244), (1910, 42122), (3820, 21061)]