19872783

素因数分解:

$3^5\times 7^2\times {\mathrm{1669}}^1$

素因数の和:1698

約数の個数: 36

約数和(自身を含む): 34649160

約数和(自身を除く): 14776377

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1669, 1701, 3969, 5007, 11683, 11907, 15021, 35049, 45063, 81781, 105147, 135189, 245343, 315441, 405567, 736029, 946323, 2208087, 2838969, 6624261, 19872783]

約数ペア:

[(1, 19872783), (3, 6624261), (7, 2838969), (9, 2208087), (21, 946323), (27, 736029), (49, 405567), (63, 315441), (81, 245343), (147, 135189), (189, 105147), (243, 81781), (441, 45063), (567, 35049), (1323, 15021), (1669, 11907), (1701, 11683), (3969, 5007)]