20641419

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{773}}^1$

素因数の和:848

約数の個数: 32

約数和(自身を含む): 32693760

約数和(自身を除く): 12052341

約数列:

[1, 3, 9, 23, 27, 43, 69, 129, 207, 387, 621, 773, 989, 1161, 2319, 2967, 6957, 8901, 17779, 20871, 26703, 33239, 53337, 99717, 160011, 299151, 480033, 764497, 897453, 2293491, 6880473, 20641419]

約数ペア:

[(1, 20641419), (3, 6880473), (9, 2293491), (23, 897453), (27, 764497), (43, 480033), (69, 299151), (129, 160011), (207, 99717), (387, 53337), (621, 33239), (773, 26703), (989, 20871), (1161, 17779), (2319, 8901), (2967, 6957)]