205005820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{2711}}^1$

素因数の和:2938

約数の個数: 48

約数和(自身を含む): 455616000

約数和(自身を除く): 250610180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 796, 995, 1990, 2711, 3781, 3980, 5422, 7562, 10844, 13555, 15124, 18905, 27110, 37810, 51509, 54220, 75620, 103018, 206036, 257545, 515090, 539489, 1030180, 1078978, 2157956, 2697445, 5394890, 10250291, 10789780, 20500582, 41001164, 51251455, 102502910, 205005820]

約数ペア:

[(1, 205005820), (2, 102502910), (4, 51251455), (5, 41001164), (10, 20500582), (19, 10789780), (20, 10250291), (38, 5394890), (76, 2697445), (95, 2157956), (190, 1078978), (199, 1030180), (380, 539489), (398, 515090), (796, 257545), (995, 206036), (1990, 103018), (2711, 75620), (3781, 54220), (3980, 51509), (5422, 37810), (7562, 27110), (10844, 18905), (13555, 15124)]