20378439

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:388

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 11232441

約数列:

[1, 3, 9, 27, 31, 93, 97, 251, 279, 291, 753, 837, 873, 2259, 2619, 3007, 6777, 7781, 9021, 23343, 24347, 27063, 70029, 73041, 81189, 210087, 219123, 657369, 754757, 2264271, 6792813, 20378439]

約数ペア:

[(1, 20378439), (3, 6792813), (9, 2264271), (27, 754757), (31, 657369), (93, 219123), (97, 210087), (251, 81189), (279, 73041), (291, 70029), (753, 27063), (837, 24347), (873, 23343), (2259, 9021), (2619, 7781), (3007, 6777)]