20744900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18859}}^1$

素因数の和:18884

約数の個数: 36

約数和(自身を含む): 49111440

約数和(自身を除く): 28366540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18859, 37718, 75436, 94295, 188590, 207449, 377180, 414898, 471475, 829796, 942950, 1037245, 1885900, 2074490, 4148980, 5186225, 10372450, 20744900]

約数ペア:

[(1, 20744900), (2, 10372450), (4, 5186225), (5, 4148980), (10, 2074490), (11, 1885900), (20, 1037245), (22, 942950), (25, 829796), (44, 471475), (50, 414898), (55, 377180), (100, 207449), (110, 188590), (220, 94295), (275, 75436), (550, 37718), (1100, 18859)]