20305960

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2551}}^1$

素因数の和:2761

約数の個数: 32

約数和(自身を含む): 45936000

約数和(自身を除く): 25630040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2551, 3980, 5102, 7960, 10204, 12755, 20408, 25510, 51020, 102040, 507649, 1015298, 2030596, 2538245, 4061192, 5076490, 10152980, 20305960]

約数ペア:

[(1, 20305960), (2, 10152980), (4, 5076490), (5, 4061192), (8, 2538245), (10, 2030596), (20, 1015298), (40, 507649), (199, 102040), (398, 51020), (796, 25510), (995, 20408), (1592, 12755), (1990, 10204), (2551, 7960), (3980, 5102)]