20518764

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1783}}^1$

素因数の和:1934

約数の個数: 48

約数和(自身を含む): 55147008

約数和(自身を除く): 34628244

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 137, 274, 411, 548, 822, 959, 1644, 1783, 1918, 2877, 3566, 3836, 5349, 5754, 7132, 10698, 11508, 12481, 21396, 24962, 37443, 49924, 74886, 149772, 244271, 488542, 732813, 977084, 1465626, 1709897, 2931252, 3419794, 5129691, 6839588, 10259382, 20518764]

約数ペア:

[(1, 20518764), (2, 10259382), (3, 6839588), (4, 5129691), (6, 3419794), (7, 2931252), (12, 1709897), (14, 1465626), (21, 977084), (28, 732813), (42, 488542), (84, 244271), (137, 149772), (274, 74886), (411, 49924), (548, 37443), (822, 24962), (959, 21396), (1644, 12481), (1783, 11508), (1918, 10698), (2877, 7132), (3566, 5754), (3836, 5349)]