21027069

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{5657}}^1$

素因数の和:5729

約数の個数: 24

約数和(自身を含む): 35305920

約数和(自身を除く): 14278851

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 5657, 16971, 39599, 50913, 118797, 333763, 356391, 1001289, 2336341, 3003867, 7009023, 21027069]

約数ペア:

[(1, 21027069), (3, 7009023), (7, 3003867), (9, 2336341), (21, 1001289), (59, 356391), (63, 333763), (177, 118797), (413, 50913), (531, 39599), (1239, 16971), (3717, 5657)]