21503259

素因数分解:

$3^3\times {\mathrm{127}}^1\times {\mathrm{6271}}^1$

素因数の和:6407

約数の個数: 16

約数和(自身を含む): 32112640

約数和(自身を除く): 10609381

約数列:

[1, 3, 9, 27, 127, 381, 1143, 3429, 6271, 18813, 56439, 169317, 796417, 2389251, 7167753, 21503259]

約数ペア:

[(1, 21503259), (3, 7167753), (9, 2389251), (27, 796417), (127, 169317), (381, 56439), (1143, 18813), (3429, 6271)]