20471247

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1997}}^1$

素因数の和:2087

約数の個数: 24

約数和(自身を含む): 31792176

約数和(自身を除く): 11320929

約数列:

[1, 3, 9, 17, 51, 67, 153, 201, 603, 1139, 1997, 3417, 5991, 10251, 17973, 33949, 101847, 133799, 305541, 401397, 1204191, 2274583, 6823749, 20471247]

約数ペア:

[(1, 20471247), (3, 6823749), (9, 2274583), (17, 1204191), (51, 401397), (67, 305541), (153, 133799), (201, 101847), (603, 33949), (1139, 17973), (1997, 10251), (3417, 5991)]