28101087

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1709}}^1$

素因数の和:1757

約数の個数: 40

約数和(自身を含む): 49658400

約数和(自身を除く): 21557313

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1709, 1827, 2349, 5127, 5481, 11963, 15381, 16443, 35889, 46143, 49561, 107667, 138429, 148683, 323001, 346927, 446049, 969003, 1040781, 1338147, 3122343, 4014441, 9367029, 28101087]

約数ペア:

[(1, 28101087), (3, 9367029), (7, 4014441), (9, 3122343), (21, 1338147), (27, 1040781), (29, 969003), (63, 446049), (81, 346927), (87, 323001), (189, 148683), (203, 138429), (261, 107667), (567, 49561), (609, 46143), (783, 35889), (1709, 16443), (1827, 15381), (2349, 11963), (5127, 5481)]