208987955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{911}}^1$

素因数の和:1067

約数の個数: 32

約数和(自身を含む): 283143168

約数和(自身を除く): 74155213

約数列:

[1, 5, 11, 43, 55, 97, 215, 473, 485, 911, 1067, 2365, 4171, 4555, 5335, 10021, 20855, 39173, 45881, 50105, 88367, 195865, 229405, 430903, 441835, 972037, 2154515, 3799781, 4860185, 18998905, 41797591, 208987955]

約数ペア:

[(1, 208987955), (5, 41797591), (11, 18998905), (43, 4860185), (55, 3799781), (97, 2154515), (215, 972037), (473, 441835), (485, 430903), (911, 229405), (1067, 195865), (2365, 88367), (4171, 50105), (4555, 45881), (5335, 39173), (10021, 20855)]