21368711

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:783

約数の個数: 32

約数和(自身を含む): 29352960

約数和(自身を除く): 7984249

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 727, 1547, 1729, 2261, 4199, 5089, 9451, 12359, 13813, 29393, 66157, 86513, 96691, 160667, 179569, 234821, 1124669, 1256983, 1643747, 3052673, 21368711]

約数ペア:

[(1, 21368711), (7, 3052673), (13, 1643747), (17, 1256983), (19, 1124669), (91, 234821), (119, 179569), (133, 160667), (221, 96691), (247, 86513), (323, 66157), (727, 29393), (1547, 13813), (1729, 12359), (2261, 9451), (4199, 5089)]