20666457

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2903}}^1$

素因数の和:3029

約数の個数: 24

約数和(自身を含む): 34429824

約数和(自身を除く): 13763367

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 2903, 7119, 8709, 20321, 26127, 60963, 182889, 328039, 984117, 2296273, 2952351, 6888819, 20666457]

約数ペア:

[(1, 20666457), (3, 6888819), (7, 2952351), (9, 2296273), (21, 984117), (63, 328039), (113, 182889), (339, 60963), (791, 26127), (1017, 20321), (2373, 8709), (2903, 7119)]