20211457878

素因数分解:

$2^1\times 3^3\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{39139}}^1$

素因数の和:39354

約数の個数: 64

約数和(自身を含む): 45878342400

約数和(自身を除く): 25666884522

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 73, 131, 146, 219, 262, 393, 438, 657, 786, 1179, 1314, 1971, 2358, 3537, 3942, 7074, 9563, 19126, 28689, 39139, 57378, 78278, 86067, 117417, 172134, 234834, 258201, 352251, 516402, 704502, 1056753, 2113506, 2857147, 5127209, 5714294, 8571441, 10254418, 15381627, 17142882, 25714323, 30763254, 46144881, 51428646, 77142969, 92289762, 138434643, 154285938, 276869286, 374286257, 748572514, 1122858771, 2245717542, 3368576313, 6737152626, 10105728939, 20211457878]

約数ペア:

[(1, 20211457878), (2, 10105728939), (3, 6737152626), (6, 3368576313), (9, 2245717542), (18, 1122858771), (27, 748572514), (54, 374286257), (73, 276869286), (131, 154285938), (146, 138434643), (219, 92289762), (262, 77142969), (393, 51428646), (438, 46144881), (657, 30763254), (786, 25714323), (1179, 17142882), (1314, 15381627), (1971, 10254418), (2358, 8571441), (3537, 5714294), (3942, 5127209), (7074, 2857147), (9563, 2113506), (19126, 1056753), (28689, 704502), (39139, 516402), (57378, 352251), (78278, 258201), (86067, 234834), (117417, 172134)]