21810303

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:413

約数の個数: 40

約数和(自身を含む): 35335872

約数和(自身を除く): 13525569

約数列:

[1, 3, 9, 17, 27, 47, 51, 81, 141, 153, 337, 423, 459, 799, 1011, 1269, 1377, 2397, 3033, 3807, 5729, 7191, 9099, 15839, 17187, 21573, 27297, 47517, 51561, 64719, 142551, 154683, 269263, 427653, 464049, 807789, 1282959, 2423367, 7270101, 21810303]

約数ペア:

[(1, 21810303), (3, 7270101), (9, 2423367), (17, 1282959), (27, 807789), (47, 464049), (51, 427653), (81, 269263), (141, 154683), (153, 142551), (337, 64719), (423, 51561), (459, 47517), (799, 27297), (1011, 21573), (1269, 17187), (1377, 15839), (2397, 9099), (3033, 7191), (3807, 5729)]