19996479

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{1153}}^1$

素因数の和:1247

約数の個数: 24

約数和(自身を含む): 30244032

約数和(自身を除く): 10247553

約数列:

[1, 3, 9, 41, 47, 123, 141, 369, 423, 1153, 1927, 3459, 5781, 10377, 17343, 47273, 54191, 141819, 162573, 425457, 487719, 2221831, 6665493, 19996479]

約数ペア:

[(1, 19996479), (3, 6665493), (9, 2221831), (41, 487719), (47, 425457), (123, 162573), (141, 141819), (369, 54191), (423, 47273), (1153, 17343), (1927, 10377), (3459, 5781)]