687447

素因数分解:

$3^6\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:82

約数の個数: 28

約数和(自身を含む): 1101744

約数和(自身を除く): 414297

約数列:

[1, 3, 9, 23, 27, 41, 69, 81, 123, 207, 243, 369, 621, 729, 943, 1107, 1863, 2829, 3321, 5589, 8487, 9963, 16767, 25461, 29889, 76383, 229149, 687447]

約数ペア:

[(1, 687447), (3, 229149), (9, 76383), (23, 29889), (27, 25461), (41, 16767), (69, 9963), (81, 8487), (123, 5589), (207, 3321), (243, 2829), (369, 1863), (621, 1107), (729, 943)]