20528080

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1873}}^1$

素因数の和:2023

約数の個数: 40

約数和(自身を含む): 48101832

約数和(自身を除く): 27573752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1873, 2192, 2740, 3746, 5480, 7492, 9365, 10960, 14984, 18730, 29968, 37460, 74920, 149840, 256601, 513202, 1026404, 1283005, 2052808, 2566010, 4105616, 5132020, 10264040, 20528080]

約数ペア:

[(1, 20528080), (2, 10264040), (4, 5132020), (5, 4105616), (8, 2566010), (10, 2052808), (16, 1283005), (20, 1026404), (40, 513202), (80, 256601), (137, 149840), (274, 74920), (548, 37460), (685, 29968), (1096, 18730), (1370, 14984), (1873, 10960), (2192, 9365), (2740, 7492), (3746, 5480)]