19728864

素因数分解:

$2^5\times 3^2\times {\mathrm{61}}^1\times {\mathrm{1123}}^1$

素因数の和:1200

約数の個数: 72

約数和(自身を含む): 57074472

約数和(自身を除く): 37345608

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 61, 72, 96, 122, 144, 183, 244, 288, 366, 488, 549, 732, 976, 1098, 1123, 1464, 1952, 2196, 2246, 2928, 3369, 4392, 4492, 5856, 6738, 8784, 8984, 10107, 13476, 17568, 17968, 20214, 26952, 35936, 40428, 53904, 68503, 80856, 107808, 137006, 161712, 205509, 274012, 323424, 411018, 548024, 616527, 822036, 1096048, 1233054, 1644072, 2192096, 2466108, 3288144, 4932216, 6576288, 9864432, 19728864]

約数ペア:

[(1, 19728864), (2, 9864432), (3, 6576288), (4, 4932216), (6, 3288144), (8, 2466108), (9, 2192096), (12, 1644072), (16, 1233054), (18, 1096048), (24, 822036), (32, 616527), (36, 548024), (48, 411018), (61, 323424), (72, 274012), (96, 205509), (122, 161712), (144, 137006), (183, 107808), (244, 80856), (288, 68503), (366, 53904), (488, 40428), (549, 35936), (732, 26952), (976, 20214), (1098, 17968), (1123, 17568), (1464, 13476), (1952, 10107), (2196, 8984), (2246, 8784), (2928, 6738), (3369, 5856), (4392, 4492)]