20528680

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2687}}^1$

素因数の和:2889

約数の個数: 32

約数和(自身を含む): 46448640

約数和(自身を除く): 25919960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2687, 3820, 5374, 7640, 10748, 13435, 21496, 26870, 53740, 107480, 513217, 1026434, 2052868, 2566085, 4105736, 5132170, 10264340, 20528680]

約数ペア:

[(1, 20528680), (2, 10264340), (4, 5132170), (5, 4105736), (8, 2566085), (10, 2052868), (20, 1026434), (40, 513217), (191, 107480), (382, 53740), (764, 26870), (955, 21496), (1528, 13435), (1910, 10748), (2687, 7640), (3820, 5374)]