208305909

素因数分解:

$3^2\times 7^2\times {\mathrm{472349}}^1$

素因数の和:472369

約数の個数: 18

約数和(自身を含む): 350011350

約数和(自身を除く): 141705441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 472349, 1417047, 3306443, 4251141, 9919329, 23145101, 29757987, 69435303, 208305909]

約数ペア:

[(1, 208305909), (3, 69435303), (7, 29757987), (9, 23145101), (21, 9919329), (49, 4251141), (63, 3306443), (147, 1417047), (441, 472349)]