21000909

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 31288320

約数和(自身を除く): 10287411

約数列:

[1, 3, 19, 23, 57, 69, 83, 193, 249, 437, 579, 1311, 1577, 1909, 3667, 4439, 4731, 5727, 11001, 13317, 16019, 36271, 48057, 84341, 108813, 253023, 304361, 368437, 913083, 1105311, 7000303, 21000909]

約数ペア:

[(1, 21000909), (3, 7000303), (19, 1105311), (23, 913083), (57, 368437), (69, 304361), (83, 253023), (193, 108813), (249, 84341), (437, 48057), (579, 36271), (1311, 16019), (1577, 13317), (1909, 11001), (3667, 5727), (4439, 4731)]