2181040

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 5133600

約数和(自身を除く): 2952560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 199, 274, 398, 548, 685, 796, 995, 1096, 1370, 1592, 1990, 2192, 2740, 3184, 3980, 5480, 7960, 10960, 15920, 27263, 54526, 109052, 136315, 218104, 272630, 436208, 545260, 1090520, 2181040]

約数ペア:

[(1, 2181040), (2, 1090520), (4, 545260), (5, 436208), (8, 272630), (10, 218104), (16, 136315), (20, 109052), (40, 54526), (80, 27263), (137, 15920), (199, 10960), (274, 7960), (398, 5480), (548, 3980), (685, 3184), (796, 2740), (995, 2192), (1096, 1990), (1370, 1592)]