20718656

素因数分解:

$2^6\times 7^1\times {\mathrm{103}}^1\times {\mathrm{449}}^1$

素因数の和:571

約数の個数: 56

約数和(自身を含む): 47548800

約数和(自身を除く): 26830144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 103, 112, 206, 224, 412, 448, 449, 721, 824, 898, 1442, 1648, 1796, 2884, 3143, 3296, 3592, 5768, 6286, 6592, 7184, 11536, 12572, 14368, 23072, 25144, 28736, 46144, 46247, 50288, 92494, 100576, 184988, 201152, 323729, 369976, 647458, 739952, 1294916, 1479904, 2589832, 2959808, 5179664, 10359328, 20718656]

約数ペア:

[(1, 20718656), (2, 10359328), (4, 5179664), (7, 2959808), (8, 2589832), (14, 1479904), (16, 1294916), (28, 739952), (32, 647458), (56, 369976), (64, 323729), (103, 201152), (112, 184988), (206, 100576), (224, 92494), (412, 50288), (448, 46247), (449, 46144), (721, 28736), (824, 25144), (898, 23072), (1442, 14368), (1648, 12572), (1796, 11536), (2884, 7184), (3143, 6592), (3296, 6286), (3592, 5768)]