20671371

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19301}}^1$

素因数の和:19331

約数の個数: 24

約数和(自身を含む): 36133344

約数和(自身を除く): 15461973

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19301, 57903, 135107, 173709, 328117, 405321, 984351, 1215963, 2296819, 2953053, 6890457, 20671371]

約数ペア:

[(1, 20671371), (3, 6890457), (7, 2953053), (9, 2296819), (17, 1215963), (21, 984351), (51, 405321), (63, 328117), (119, 173709), (153, 135107), (357, 57903), (1071, 19301)]