20081817

素因数分解:

$3^3\times 7^2\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 35513280

約数和(自身を除く): 15431463

約数列:

[1, 3, 7, 9, 21, 27, 43, 49, 63, 129, 147, 189, 301, 353, 387, 441, 903, 1059, 1161, 1323, 2107, 2471, 2709, 3177, 6321, 7413, 8127, 9531, 15179, 17297, 18963, 22239, 45537, 51891, 56889, 66717, 106253, 136611, 155673, 318759, 409833, 467019, 743771, 956277, 2231313, 2868831, 6693939, 20081817]

約数ペア:

[(1, 20081817), (3, 6693939), (7, 2868831), (9, 2231313), (21, 956277), (27, 743771), (43, 467019), (49, 409833), (63, 318759), (129, 155673), (147, 136611), (189, 106253), (301, 66717), (353, 56889), (387, 51891), (441, 45537), (903, 22239), (1059, 18963), (1161, 17297), (1323, 15179), (2107, 9531), (2471, 8127), (2709, 7413), (3177, 6321)]