840285

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 1482624

約数和(自身を除く): 642339

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 263, 355, 639, 789, 1065, 1315, 2367, 3195, 3945, 11835, 18673, 56019, 93365, 168057, 280095, 840285]

約数ペア:

[(1, 840285), (3, 280095), (5, 168057), (9, 93365), (15, 56019), (45, 18673), (71, 11835), (213, 3945), (263, 3195), (355, 2367), (639, 1315), (789, 1065)]