2159120

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:347

約数の個数: 40

約数和(自身を含む): 5082264

約数和(自身を除く): 2923144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 197, 274, 394, 548, 685, 788, 985, 1096, 1370, 1576, 1970, 2192, 2740, 3152, 3940, 5480, 7880, 10960, 15760, 26989, 53978, 107956, 134945, 215912, 269890, 431824, 539780, 1079560, 2159120]

約数ペア:

[(1, 2159120), (2, 1079560), (4, 539780), (5, 431824), (8, 269890), (10, 215912), (16, 134945), (20, 107956), (40, 53978), (80, 26989), (137, 15760), (197, 10960), (274, 7880), (394, 5480), (548, 3940), (685, 3152), (788, 2740), (985, 2192), (1096, 1970), (1370, 1576)]