20071919

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 24399648

約数和(自身を除く): 4327729

約数列:

[1, 7, 41, 49, 97, 103, 287, 679, 721, 2009, 3977, 4223, 4753, 5047, 9991, 27839, 29561, 69937, 194873, 206927, 409631, 489559, 2867417, 20071919]

約数ペア:

[(1, 20071919), (7, 2867417), (41, 489559), (49, 409631), (97, 206927), (103, 194873), (287, 69937), (679, 29561), (721, 27839), (2009, 9991), (3977, 5047), (4223, 4753)]