20315178

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{673}}^1$

素因数の和:740

約数の個数: 64

約数和(自身を含む): 49822080

約数和(自身を除く): 29506902

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 43, 54, 78, 86, 117, 129, 234, 258, 351, 387, 559, 673, 702, 774, 1118, 1161, 1346, 1677, 2019, 2322, 3354, 4038, 5031, 6057, 8749, 10062, 12114, 15093, 17498, 18171, 26247, 28939, 30186, 36342, 52494, 57878, 78741, 86817, 157482, 173634, 236223, 260451, 376207, 472446, 520902, 752414, 781353, 1128621, 1562706, 2257242, 3385863, 6771726, 10157589, 20315178]

約数ペア:

[(1, 20315178), (2, 10157589), (3, 6771726), (6, 3385863), (9, 2257242), (13, 1562706), (18, 1128621), (26, 781353), (27, 752414), (39, 520902), (43, 472446), (54, 376207), (78, 260451), (86, 236223), (117, 173634), (129, 157482), (234, 86817), (258, 78741), (351, 57878), (387, 52494), (559, 36342), (673, 30186), (702, 28939), (774, 26247), (1118, 18171), (1161, 17498), (1346, 15093), (1677, 12114), (2019, 10062), (2322, 8749), (3354, 6057), (4038, 5031)]