1720221321

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{146539}}^1$

素因数の和:146605

約数の個数: 32

約数和(自身を含む): 2888596480

約数和(自身を除く): 1168375159

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 3913, 11739, 146539, 439617, 1025773, 1905007, 3077319, 5715021, 6301177, 13335049, 18903531, 40005147, 44108239, 81915301, 132324717, 245745903, 573407107, 1720221321]

約数ペア:

[(1, 1720221321), (3, 573407107), (7, 245745903), (13, 132324717), (21, 81915301), (39, 44108239), (43, 40005147), (91, 18903531), (129, 13335049), (273, 6301177), (301, 5715021), (559, 3077319), (903, 1905007), (1677, 1025773), (3913, 439617), (11739, 146539)]