640620575

素因数分解:

$5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{1097}}^1$

素因数の和:1232

約数の個数: 48

約数和(自身を含む): 941082624

約数和(自身を除く): 300462049

約数列:

[1, 5, 7, 25, 35, 47, 71, 175, 235, 329, 355, 497, 1097, 1175, 1645, 1775, 2485, 3337, 5485, 7679, 8225, 12425, 16685, 23359, 27425, 38395, 51559, 77887, 83425, 116795, 191975, 257795, 360913, 389435, 545209, 583975, 1288975, 1804565, 1947175, 2726045, 3660689, 9022825, 13630225, 18303445, 25624823, 91517225, 128124115, 640620575]

約数ペア:

[(1, 640620575), (5, 128124115), (7, 91517225), (25, 25624823), (35, 18303445), (47, 13630225), (71, 9022825), (175, 3660689), (235, 2726045), (329, 1947175), (355, 1804565), (497, 1288975), (1097, 583975), (1175, 545209), (1645, 389435), (1775, 360913), (2485, 257795), (3337, 191975), (5485, 116795), (7679, 83425), (8225, 77887), (12425, 51559), (16685, 38395), (23359, 27425)]