287217

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:157

約数の個数: 24

約数和(自身を含む): 489216

約数和(自身を除く): 201999

約数列:

[1, 3, 7, 9, 21, 47, 63, 97, 141, 291, 329, 423, 679, 873, 987, 2037, 2961, 4559, 6111, 13677, 31913, 41031, 95739, 287217]

約数ペア:

[(1, 287217), (3, 95739), (7, 41031), (9, 31913), (21, 13677), (47, 6111), (63, 4559), (97, 2961), (141, 2037), (291, 987), (329, 873), (423, 679)]