21590331

素因数分解:

$3^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{761}}^1$

素因数の和:971

約数の個数: 24

約数和(自身を含む): 33704784

約数和(自身を除く): 12114453

約数列:

[1, 3, 7, 21, 49, 147, 193, 579, 761, 1351, 2283, 4053, 5327, 9457, 15981, 28371, 37289, 111867, 146873, 440619, 1028111, 3084333, 7196777, 21590331]

約数ペア:

[(1, 21590331), (3, 7196777), (7, 3084333), (21, 1028111), (49, 440619), (147, 146873), (193, 111867), (579, 37289), (761, 28371), (1351, 15981), (2283, 9457), (4053, 5327)]