21392343

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1301}}^1$

素因数の和:1349

約数の個数: 40

約数和(自身を含む): 37810080

約数和(自身を除く): 16417737

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1301, 1827, 2349, 3903, 5481, 9107, 11709, 16443, 27321, 35127, 37729, 81963, 105381, 113187, 245889, 264103, 339561, 737667, 792309, 1018683, 2376927, 3056049, 7130781, 21392343]

約数ペア:

[(1, 21392343), (3, 7130781), (7, 3056049), (9, 2376927), (21, 1018683), (27, 792309), (29, 737667), (63, 339561), (81, 264103), (87, 245889), (189, 113187), (203, 105381), (261, 81963), (567, 37729), (609, 35127), (783, 27321), (1301, 16443), (1827, 11709), (2349, 9107), (3903, 5481)]