20560565

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{439}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 28512000

約数和(自身を除く): 7951435

約数列:

[1, 5, 17, 19, 29, 85, 95, 145, 323, 439, 493, 551, 1615, 2195, 2465, 2755, 7463, 8341, 9367, 12731, 37315, 41705, 46835, 63655, 141797, 216427, 241889, 708985, 1082135, 1209445, 4112113, 20560565]

約数ペア:

[(1, 20560565), (5, 4112113), (17, 1209445), (19, 1082135), (29, 708985), (85, 241889), (95, 216427), (145, 141797), (323, 63655), (439, 46835), (493, 41705), (551, 37315), (1615, 12731), (2195, 9367), (2465, 8341), (2755, 7463)]