18657025

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 24534144

約数和(自身を除く): 5877119

約数列:

[1, 5, 23, 25, 71, 115, 355, 457, 575, 1633, 1775, 2285, 8165, 10511, 11425, 32447, 40825, 52555, 162235, 262775, 746281, 811175, 3731405, 18657025]

約数ペア:

[(1, 18657025), (5, 3731405), (23, 811175), (25, 746281), (71, 262775), (115, 162235), (355, 52555), (457, 40825), (575, 32447), (1633, 11425), (1775, 10511), (2285, 8165)]