3959991

素因数分解:

$3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{263}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 6589440

約数和(自身を除く): 2629449

約数列:

[1, 3, 7, 9, 21, 63, 239, 263, 717, 789, 1673, 1841, 2151, 2367, 5019, 5523, 15057, 16569, 62857, 188571, 439999, 565713, 1319997, 3959991]

約数ペア:

[(1, 3959991), (3, 1319997), (7, 565713), (9, 439999), (21, 188571), (63, 62857), (239, 16569), (263, 15057), (717, 5523), (789, 5019), (1673, 2367), (1841, 2151)]