201981020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{2671}}^1$

素因数の和:2898

約数の個数: 48

約数和(自身を含む): 448896000

約数和(自身を除く): 246914980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 796, 995, 1990, 2671, 3781, 3980, 5342, 7562, 10684, 13355, 15124, 18905, 26710, 37810, 50749, 53420, 75620, 101498, 202996, 253745, 507490, 531529, 1014980, 1063058, 2126116, 2657645, 5315290, 10099051, 10630580, 20198102, 40396204, 50495255, 100990510, 201981020]

約数ペア:

[(1, 201981020), (2, 100990510), (4, 50495255), (5, 40396204), (10, 20198102), (19, 10630580), (20, 10099051), (38, 5315290), (76, 2657645), (95, 2126116), (190, 1063058), (199, 1014980), (380, 531529), (398, 507490), (796, 253745), (995, 202996), (1990, 101498), (2671, 75620), (3781, 53420), (3980, 50749), (5342, 37810), (7562, 26710), (10684, 18905), (13355, 15124)]