19511721

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{193}}^1\times {\mathrm{239}}^1$

素因数の和:485

約数の個数: 24

約数和(自身を含む): 29053440

約数和(自身を除く): 9541719

約数列:

[1, 3, 9, 47, 141, 193, 239, 423, 579, 717, 1737, 2151, 9071, 11233, 27213, 33699, 46127, 81639, 101097, 138381, 415143, 2167969, 6503907, 19511721]

約数ペア:

[(1, 19511721), (3, 6503907), (9, 2167969), (47, 415143), (141, 138381), (193, 101097), (239, 81639), (423, 46127), (579, 33699), (717, 27213), (1737, 11233), (2151, 9071)]