128785000

素因数分解:

$2^3\times 5^4\times {\mathrm{43}}^1\times {\mathrm{599}}^1$

素因数の和:668

約数の個数: 80

約数和(自身を含む): 309276000

約数和(自身を除く): 180491000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 500, 599, 625, 860, 1000, 1075, 1198, 1250, 1720, 2150, 2396, 2500, 2995, 4300, 4792, 5000, 5375, 5990, 8600, 10750, 11980, 14975, 21500, 23960, 25757, 26875, 29950, 43000, 51514, 53750, 59900, 74875, 103028, 107500, 119800, 128785, 149750, 206056, 215000, 257570, 299500, 374375, 515140, 599000, 643925, 748750, 1030280, 1287850, 1497500, 2575700, 2995000, 3219625, 5151400, 6439250, 12878500, 16098125, 25757000, 32196250, 64392500, 128785000]

約数ペア:

[(1, 128785000), (2, 64392500), (4, 32196250), (5, 25757000), (8, 16098125), (10, 12878500), (20, 6439250), (25, 5151400), (40, 3219625), (43, 2995000), (50, 2575700), (86, 1497500), (100, 1287850), (125, 1030280), (172, 748750), (200, 643925), (215, 599000), (250, 515140), (344, 374375), (430, 299500), (500, 257570), (599, 215000), (625, 206056), (860, 149750), (1000, 128785), (1075, 119800), (1198, 107500), (1250, 103028), (1720, 74875), (2150, 59900), (2396, 53750), (2500, 51514), (2995, 43000), (4300, 29950), (4792, 26875), (5000, 25757), (5375, 23960), (5990, 21500), (8600, 14975), (10750, 11980)]