28021149

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1723}}^1$

素因数の和:1881

約数の個数: 24

約数和(自身を含む): 43927520

約数和(自身を除く): 15906371

約数列:

[1, 3, 9, 13, 39, 117, 139, 417, 1251, 1723, 1807, 5169, 5421, 15507, 16263, 22399, 67197, 201591, 239497, 718491, 2155473, 3113461, 9340383, 28021149]

約数ペア:

[(1, 28021149), (3, 9340383), (9, 3113461), (13, 2155473), (39, 718491), (117, 239497), (139, 201591), (417, 67197), (1251, 22399), (1723, 16263), (1807, 15507), (5169, 5421)]