2016455720

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{489431}}^1$

素因数の和:489545

約数の個数: 32

約数和(自身を含む): 4581083520

約数和(自身を除く): 2564627800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 489431, 978862, 1957724, 2447155, 3915448, 4894310, 9788620, 19577240, 50411393, 100822786, 201645572, 252056965, 403291144, 504113930, 1008227860, 2016455720]

約数ペア:

[(1, 2016455720), (2, 1008227860), (4, 504113930), (5, 403291144), (8, 252056965), (10, 201645572), (20, 100822786), (40, 50411393), (103, 19577240), (206, 9788620), (412, 4894310), (515, 3915448), (824, 2447155), (1030, 1957724), (2060, 978862), (4120, 489431)]