2080040

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 4725000

約数和(自身を除く): 2644960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 349, 596, 698, 745, 1192, 1396, 1490, 1745, 2792, 2980, 3490, 5960, 6980, 13960, 52001, 104002, 208004, 260005, 416008, 520010, 1040020, 2080040]

約数ペア:

[(1, 2080040), (2, 1040020), (4, 520010), (5, 416008), (8, 260005), (10, 208004), (20, 104002), (40, 52001), (149, 13960), (298, 6980), (349, 5960), (596, 3490), (698, 2980), (745, 2792), (1192, 1745), (1396, 1490)]