80731900

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 181863360

約数和(自身を除く): 101131460

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 89, 94, 100, 178, 188, 193, 235, 356, 386, 445, 470, 772, 890, 940, 965, 1175, 1780, 1930, 2225, 2350, 3860, 4183, 4450, 4700, 4825, 8366, 8900, 9071, 9650, 16732, 17177, 18142, 19300, 20915, 34354, 36284, 41830, 45355, 68708, 83660, 85885, 90710, 104575, 171770, 181420, 209150, 226775, 343540, 418300, 429425, 453550, 807319, 858850, 907100, 1614638, 1717700, 3229276, 4036595, 8073190, 16146380, 20182975, 40365950, 80731900]

約数ペア:

[(1, 80731900), (2, 40365950), (4, 20182975), (5, 16146380), (10, 8073190), (20, 4036595), (25, 3229276), (47, 1717700), (50, 1614638), (89, 907100), (94, 858850), (100, 807319), (178, 453550), (188, 429425), (193, 418300), (235, 343540), (356, 226775), (386, 209150), (445, 181420), (470, 171770), (772, 104575), (890, 90710), (940, 85885), (965, 83660), (1175, 68708), (1780, 45355), (1930, 41830), (2225, 36284), (2350, 34354), (3860, 20915), (4183, 19300), (4450, 18142), (4700, 17177), (4825, 16732), (8366, 9650), (8900, 9071)]