20728792

素因数分解:

$2^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2663}}^1$

素因数の和:2815

約数の個数: 32

約数和(自身を含む): 44755200

約数和(自身を除く): 24026408

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 2663, 3892, 5326, 7784, 10652, 18641, 21304, 37282, 74564, 149128, 370157, 740314, 1480628, 2591099, 2961256, 5182198, 10364396, 20728792]

約数ペア:

[(1, 20728792), (2, 10364396), (4, 5182198), (7, 2961256), (8, 2591099), (14, 1480628), (28, 740314), (56, 370157), (139, 149128), (278, 74564), (556, 37282), (973, 21304), (1112, 18641), (1946, 10652), (2663, 7784), (3892, 5326)]