20512894556

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2148397}}^1$

素因数の和:2148450

約数の個数: 48

約数和(自身を含む): 46199150592

約数和(自身を除く): 25686256036

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 77, 124, 154, 217, 308, 341, 434, 682, 868, 1364, 2387, 4774, 9548, 2148397, 4296794, 8593588, 15038779, 23632367, 30077558, 47264734, 60155116, 66600307, 94529468, 133200614, 165426569, 266401228, 330853138, 466202149, 661706276, 732603377, 932404298, 1465206754, 1864808596, 2930413508, 5128223639, 10256447278, 20512894556]

約数ペア:

[(1, 20512894556), (2, 10256447278), (4, 5128223639), (7, 2930413508), (11, 1864808596), (14, 1465206754), (22, 932404298), (28, 732603377), (31, 661706276), (44, 466202149), (62, 330853138), (77, 266401228), (124, 165426569), (154, 133200614), (217, 94529468), (308, 66600307), (341, 60155116), (434, 47264734), (682, 30077558), (868, 23632367), (1364, 15038779), (2387, 8593588), (4774, 4296794), (9548, 2148397)]