318636680

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{77339}}^1$

素因数の和:77453

約数の個数: 32

約数和(自身を含む): 723902400

約数和(自身を除く): 405265720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 77339, 154678, 309356, 386695, 618712, 773390, 1546780, 3093560, 7965917, 15931834, 31863668, 39829585, 63727336, 79659170, 159318340, 318636680]

約数ペア:

[(1, 318636680), (2, 159318340), (4, 79659170), (5, 63727336), (8, 39829585), (10, 31863668), (20, 15931834), (40, 7965917), (103, 3093560), (206, 1546780), (412, 773390), (515, 618712), (824, 386695), (1030, 309356), (2060, 154678), (4120, 77339)]