20102980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{5051}}^1$

素因数の和:5259

約数の個数: 24

約数和(自身を含む): 42436800

約数和(自身を除く): 22333820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 5051, 10102, 20204, 25255, 50510, 101020, 1005149, 2010298, 4020596, 5025745, 10051490, 20102980]

約数ペア:

[(1, 20102980), (2, 10051490), (4, 5025745), (5, 4020596), (10, 2010298), (20, 1005149), (199, 101020), (398, 50510), (796, 25255), (995, 20204), (1990, 10102), (3980, 5051)]