21895029

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 14796171

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 239, 243, 261, 351, 377, 717, 783, 1053, 1131, 2151, 2349, 3107, 3159, 3393, 6453, 6931, 7047, 9321, 10179, 19359, 20793, 27963, 30537, 58077, 62379, 83889, 90103, 91611, 187137, 251667, 270309, 561411, 755001, 810927, 1684233, 2432781, 7298343, 21895029]

約数ペア:

[(1, 21895029), (3, 7298343), (9, 2432781), (13, 1684233), (27, 810927), (29, 755001), (39, 561411), (81, 270309), (87, 251667), (117, 187137), (239, 91611), (243, 90103), (261, 83889), (351, 62379), (377, 58077), (717, 30537), (783, 27963), (1053, 20793), (1131, 19359), (2151, 10179), (2349, 9321), (3107, 7047), (3159, 6931), (3393, 6453)]