18211358

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:304

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 12581602

約数列:

[1, 2, 11, 22, 71, 89, 131, 142, 178, 262, 781, 979, 1441, 1562, 1958, 2882, 6319, 9301, 11659, 12638, 18602, 23318, 69509, 102311, 128249, 139018, 204622, 256498, 827789, 1655578, 9105679, 18211358]

約数ペア:

[(1, 18211358), (2, 9105679), (11, 1655578), (22, 827789), (71, 256498), (89, 204622), (131, 139018), (142, 128249), (178, 102311), (262, 69509), (781, 23318), (979, 18602), (1441, 12638), (1562, 11659), (1958, 9301), (2882, 6319)]