19885257

素因数分解:

$3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2063}}^1$

素因数の和:2099

約数の個数: 40

約数和(自身を含む): 35963136

約数和(自身を除く): 16077879

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 153, 189, 357, 459, 567, 1071, 1377, 2063, 3213, 6189, 9639, 14441, 18567, 35071, 43323, 55701, 105213, 129969, 167103, 245497, 315639, 389907, 736491, 946917, 1169721, 2209473, 2840751, 6628419, 19885257]

約数ペア:

[(1, 19885257), (3, 6628419), (7, 2840751), (9, 2209473), (17, 1169721), (21, 946917), (27, 736491), (51, 389907), (63, 315639), (81, 245497), (119, 167103), (153, 129969), (189, 105213), (357, 55701), (459, 43323), (567, 35071), (1071, 18567), (1377, 14441), (2063, 9639), (3213, 6189)]