209173881

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{2647}}^1$

素因数の和:2781

約数の個数: 32

約数和(自身を含む): 329453568

約数和(自身を除く): 120279687

約数列:

[1, 3, 7, 21, 53, 71, 159, 213, 371, 497, 1113, 1491, 2647, 3763, 7941, 11289, 18529, 26341, 55587, 79023, 140291, 187937, 420873, 563811, 982037, 1315559, 2946111, 3946677, 9960661, 29881983, 69724627, 209173881]

約数ペア:

[(1, 209173881), (3, 69724627), (7, 29881983), (21, 9960661), (53, 3946677), (71, 2946111), (159, 1315559), (213, 982037), (371, 563811), (497, 420873), (1113, 187937), (1491, 140291), (2647, 79023), (3763, 55587), (7941, 26341), (11289, 18529)]