638000

素因数分解:

$2^4\times 5^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1$

素因数の和:63

約数の個数: 80

約数和(自身を含む): 1740960

約数和(自身を除く): 1102960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 29, 40, 44, 50, 55, 58, 80, 88, 100, 110, 116, 125, 145, 176, 200, 220, 232, 250, 275, 290, 319, 400, 440, 464, 500, 550, 580, 638, 725, 880, 1000, 1100, 1160, 1276, 1375, 1450, 1595, 2000, 2200, 2320, 2552, 2750, 2900, 3190, 3625, 4400, 5104, 5500, 5800, 6380, 7250, 7975, 11000, 11600, 12760, 14500, 15950, 22000, 25520, 29000, 31900, 39875, 58000, 63800, 79750, 127600, 159500, 319000, 638000]

約数ペア:

[(1, 638000), (2, 319000), (4, 159500), (5, 127600), (8, 79750), (10, 63800), (11, 58000), (16, 39875), (20, 31900), (22, 29000), (25, 25520), (29, 22000), (40, 15950), (44, 14500), (50, 12760), (55, 11600), (58, 11000), (80, 7975), (88, 7250), (100, 6380), (110, 5800), (116, 5500), (125, 5104), (145, 4400), (176, 3625), (200, 3190), (220, 2900), (232, 2750), (250, 2552), (275, 2320), (290, 2200), (319, 2000), (400, 1595), (440, 1450), (464, 1375), (500, 1276), (550, 1160), (580, 1100), (638, 1000), (725, 880)]