2644000

素因数分解:

$2^5\times 5^3\times {\mathrm{661}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 6506136

約数和(自身を除く): 3862136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 661, 800, 1000, 1322, 2000, 2644, 3305, 4000, 5288, 6610, 10576, 13220, 16525, 21152, 26440, 33050, 52880, 66100, 82625, 105760, 132200, 165250, 264400, 330500, 528800, 661000, 1322000, 2644000]

約数ペア:

[(1, 2644000), (2, 1322000), (4, 661000), (5, 528800), (8, 330500), (10, 264400), (16, 165250), (20, 132200), (25, 105760), (32, 82625), (40, 66100), (50, 52880), (80, 33050), (100, 26440), (125, 21152), (160, 16525), (200, 13220), (250, 10576), (400, 6610), (500, 5288), (661, 4000), (800, 3305), (1000, 2644), (1322, 2000)]