20840072

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{21529}}^1$

素因数の和:21557

約数の個数: 24

約数和(自身を含む): 42952350

約数和(自身を除く): 22112278

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 21529, 43058, 86116, 172232, 236819, 473638, 947276, 1894552, 2605009, 5210018, 10420036, 20840072]

約数ペア:

[(1, 20840072), (2, 10420036), (4, 5210018), (8, 2605009), (11, 1894552), (22, 947276), (44, 473638), (88, 236819), (121, 172232), (242, 86116), (484, 43058), (968, 21529)]