664862980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{167051}}^1$

素因数の和:167259

約数の個数: 24

約数和(自身を含む): 1403236800

約数和(自身を除く): 738373820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 167051, 334102, 668204, 835255, 1670510, 3341020, 33243149, 66486298, 132972596, 166215745, 332431490, 664862980]

約数ペア:

[(1, 664862980), (2, 332431490), (4, 166215745), (5, 132972596), (10, 66486298), (20, 33243149), (199, 3341020), (398, 1670510), (796, 835255), (995, 668204), (1990, 334102), (3980, 167051)]