21432257

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2339}}^1$

素因数の和:2381

約数の個数: 24

約数和(自身を含む): 28810080

約数和(自身を除く): 7377823

約数列:

[1, 7, 11, 17, 49, 77, 119, 187, 539, 833, 1309, 2339, 9163, 16373, 25729, 39763, 114611, 180103, 278341, 437393, 1260721, 1948387, 3061751, 21432257]

約数ペア:

[(1, 21432257), (7, 3061751), (11, 1948387), (17, 1260721), (49, 437393), (77, 278341), (119, 180103), (187, 114611), (539, 39763), (833, 25729), (1309, 16373), (2339, 9163)]