20257216

素因数分解:

$2^6\times 7^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1$

素因数の和:561

約数の個数: 56

約数和(自身を含む): 46492160

約数和(自身を除く): 26234944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 103, 112, 206, 224, 412, 439, 448, 721, 824, 878, 1442, 1648, 1756, 2884, 3073, 3296, 3512, 5768, 6146, 6592, 7024, 11536, 12292, 14048, 23072, 24584, 28096, 45217, 46144, 49168, 90434, 98336, 180868, 196672, 316519, 361736, 633038, 723472, 1266076, 1446944, 2532152, 2893888, 5064304, 10128608, 20257216]

約数ペア:

[(1, 20257216), (2, 10128608), (4, 5064304), (7, 2893888), (8, 2532152), (14, 1446944), (16, 1266076), (28, 723472), (32, 633038), (56, 361736), (64, 316519), (103, 196672), (112, 180868), (206, 98336), (224, 90434), (412, 49168), (439, 46144), (448, 45217), (721, 28096), (824, 24584), (878, 23072), (1442, 14048), (1648, 12292), (1756, 11536), (2884, 7024), (3073, 6592), (3296, 6146), (3512, 5768)]