27986000

素因数分解:

$2^4\times 5^3\times 7^1\times {\mathrm{1999}}^1$

素因数の和:2029

約数の個数: 80

約数和(自身を含む): 77376000

約数和(自身を除く): 49390000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 125, 140, 175, 200, 250, 280, 350, 400, 500, 560, 700, 875, 1000, 1400, 1750, 1999, 2000, 2800, 3500, 3998, 7000, 7996, 9995, 13993, 14000, 15992, 19990, 27986, 31984, 39980, 49975, 55972, 69965, 79960, 99950, 111944, 139930, 159920, 199900, 223888, 249875, 279860, 349825, 399800, 499750, 559720, 699650, 799600, 999500, 1119440, 1399300, 1749125, 1999000, 2798600, 3498250, 3998000, 5597200, 6996500, 13993000, 27986000]

約数ペア:

[(1, 27986000), (2, 13993000), (4, 6996500), (5, 5597200), (7, 3998000), (8, 3498250), (10, 2798600), (14, 1999000), (16, 1749125), (20, 1399300), (25, 1119440), (28, 999500), (35, 799600), (40, 699650), (50, 559720), (56, 499750), (70, 399800), (80, 349825), (100, 279860), (112, 249875), (125, 223888), (140, 199900), (175, 159920), (200, 139930), (250, 111944), (280, 99950), (350, 79960), (400, 69965), (500, 55972), (560, 49975), (700, 39980), (875, 31984), (1000, 27986), (1400, 19990), (1750, 15992), (1999, 14000), (2000, 13993), (2800, 9995), (3500, 7996), (3998, 7000)]