18499405

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{71}}^1$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 23818752

約数和(自身を除く): 5319347

約数列:

[1, 5, 31, 41, 71, 155, 205, 355, 1271, 1681, 2201, 2911, 6355, 8405, 11005, 14555, 52111, 90241, 119351, 260555, 451205, 596755, 3699881, 18499405]

約数ペア:

[(1, 18499405), (5, 3699881), (31, 596755), (41, 451205), (71, 260555), (155, 119351), (205, 90241), (355, 52111), (1271, 14555), (1681, 11005), (2201, 8405), (2911, 6355)]