20123557509

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1559603}}^1$

素因数の和:1559657

約数の個数: 32

約数和(自身を含む): 32339948544

約数和(自身を除く): 12216391035

約数列:

[1, 3, 11, 17, 23, 33, 51, 69, 187, 253, 391, 561, 759, 1173, 4301, 12903, 1559603, 4678809, 17155633, 26513251, 35870869, 51466899, 79539753, 107612607, 291645761, 394579559, 609804773, 874937283, 1183738677, 1829414319, 6707852503, 20123557509]

約数ペア:

[(1, 20123557509), (3, 6707852503), (11, 1829414319), (17, 1183738677), (23, 874937283), (33, 609804773), (51, 394579559), (69, 291645761), (187, 107612607), (253, 79539753), (391, 51466899), (561, 35870869), (759, 26513251), (1173, 17155633), (4301, 4678809), (12903, 1559603)]