21121485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18287}}^1$

素因数の和:18313

約数の個数: 32

約数和(自身を含む): 42135552

約数和(自身を除く): 21014067

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18287, 54861, 91435, 128009, 201157, 274305, 384027, 603471, 640045, 1005785, 1408099, 1920135, 3017355, 4224297, 7040495, 21121485]

約数ペア:

[(1, 21121485), (3, 7040495), (5, 4224297), (7, 3017355), (11, 1920135), (15, 1408099), (21, 1005785), (33, 640045), (35, 603471), (55, 384027), (77, 274305), (105, 201157), (165, 128009), (231, 91435), (385, 54861), (1155, 18287)]