2018927720

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{490031}}^1$

素因数の和:490145

約数の個数: 32

約数和(自身を含む): 4586699520

約数和(自身を除く): 2567771800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 490031, 980062, 1960124, 2450155, 3920248, 4900310, 9800620, 19601240, 50473193, 100946386, 201892772, 252365965, 403785544, 504731930, 1009463860, 2018927720]

約数ペア:

[(1, 2018927720), (2, 1009463860), (4, 504731930), (5, 403785544), (8, 252365965), (10, 201892772), (20, 100946386), (40, 50473193), (103, 19601240), (206, 9800620), (412, 4900310), (515, 3920248), (824, 2450155), (1030, 1960124), (2060, 980062), (4120, 490031)]