280021000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:504

約数の個数: 128

約数和(自身を含む): 757785600

約数和(自身を除く): 477764600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 109, 125, 140, 175, 200, 218, 250, 280, 350, 367, 436, 500, 545, 700, 734, 763, 872, 875, 1000, 1090, 1400, 1468, 1526, 1750, 1835, 2180, 2569, 2725, 2936, 3052, 3500, 3670, 3815, 4360, 5138, 5450, 6104, 7000, 7340, 7630, 9175, 10276, 10900, 12845, 13625, 14680, 15260, 18350, 19075, 20552, 21800, 25690, 27250, 30520, 36700, 38150, 40003, 45875, 51380, 54500, 64225, 73400, 76300, 80006, 91750, 95375, 102760, 109000, 128450, 152600, 160012, 183500, 190750, 200015, 256900, 280021, 320024, 321125, 367000, 381500, 400030, 513800, 560042, 642250, 763000, 800060, 1000075, 1120084, 1284500, 1400105, 1600120, 2000150, 2240168, 2569000, 2800210, 4000300, 5000375, 5600420, 7000525, 8000600, 10000750, 11200840, 14001050, 20001500, 28002100, 35002625, 40003000, 56004200, 70005250, 140010500, 280021000]

約数ペア:

[(1, 280021000), (2, 140010500), (4, 70005250), (5, 56004200), (7, 40003000), (8, 35002625), (10, 28002100), (14, 20001500), (20, 14001050), (25, 11200840), (28, 10000750), (35, 8000600), (40, 7000525), (50, 5600420), (56, 5000375), (70, 4000300), (100, 2800210), (109, 2569000), (125, 2240168), (140, 2000150), (175, 1600120), (200, 1400105), (218, 1284500), (250, 1120084), (280, 1000075), (350, 800060), (367, 763000), (436, 642250), (500, 560042), (545, 513800), (700, 400030), (734, 381500), (763, 367000), (872, 321125), (875, 320024), (1000, 280021), (1090, 256900), (1400, 200015), (1468, 190750), (1526, 183500), (1750, 160012), (1835, 152600), (2180, 128450), (2569, 109000), (2725, 102760), (2936, 95375), (3052, 91750), (3500, 80006), (3670, 76300), (3815, 73400), (4360, 64225), (5138, 54500), (5450, 51380), (6104, 45875), (7000, 40003), (7340, 38150), (7630, 36700), (9175, 30520), (10276, 27250), (10900, 25690), (12845, 21800), (13625, 20552), (14680, 19075), (15260, 18350)]