20815676

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8353}}^1$

素因数の和:8453

約数の個数: 24

約数和(自身を含む): 42104160

約数和(自身を除く): 21288484

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8353, 16706, 33412, 58471, 116942, 233884, 743417, 1486834, 2973668, 5203919, 10407838, 20815676]

約数ペア:

[(1, 20815676), (2, 10407838), (4, 5203919), (7, 2973668), (14, 1486834), (28, 743417), (89, 233884), (178, 116942), (356, 58471), (623, 33412), (1246, 16706), (2492, 8353)]