19877319

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3187}}^1$

素因数の和:3217

約数の個数: 40

約数和(自身を含む): 37031808

約数和(自身を除く): 17154489

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 297, 567, 693, 891, 2079, 3187, 6237, 9561, 22309, 28683, 35057, 66927, 86049, 105171, 200781, 245399, 258147, 315513, 602343, 736197, 946539, 1807029, 2208591, 2839617, 6625773, 19877319]

約数ペア:

[(1, 19877319), (3, 6625773), (7, 2839617), (9, 2208591), (11, 1807029), (21, 946539), (27, 736197), (33, 602343), (63, 315513), (77, 258147), (81, 245399), (99, 200781), (189, 105171), (231, 86049), (297, 66927), (567, 35057), (693, 28683), (891, 22309), (2079, 9561), (3187, 6237)]