290709

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:146

約数の個数: 20

約数和(自身を含む): 450604

約数和(自身を除く): 159895

約数列:

[1, 3, 9, 27, 37, 81, 97, 111, 291, 333, 873, 999, 2619, 2997, 3589, 7857, 10767, 32301, 96903, 290709]

約数ペア:

[(1, 290709), (3, 96903), (9, 32301), (27, 10767), (37, 7857), (81, 3589), (97, 2997), (111, 2619), (291, 999), (333, 873)]