21398223

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5449}}^1$

素因数の和:5487

約数の個数: 32

約数和(自身を含む): 37670400

約数和(自身を除く): 16272177

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 5449, 16347, 38143, 59939, 92633, 114429, 179817, 277899, 419573, 648431, 1018963, 1258719, 1945293, 3056889, 7132741, 21398223]

約数ペア:

[(1, 21398223), (3, 7132741), (7, 3056889), (11, 1945293), (17, 1258719), (21, 1018963), (33, 648431), (51, 419573), (77, 277899), (119, 179817), (187, 114429), (231, 92633), (357, 59939), (561, 38143), (1309, 16347), (3927, 5449)]