20170975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1789}}^1$

素因数の和:1851

約数の個数: 24

約数和(自身を含む): 27966960

約数和(自身を除く): 7795985

約数列:

[1, 5, 11, 25, 41, 55, 205, 275, 451, 1025, 1789, 2255, 8945, 11275, 19679, 44725, 73349, 98395, 366745, 491975, 806839, 1833725, 4034195, 20170975]

約数ペア:

[(1, 20170975), (5, 4034195), (11, 1833725), (25, 806839), (41, 491975), (55, 366745), (205, 98395), (275, 73349), (451, 44725), (1025, 19679), (1789, 11275), (2255, 8945)]