28179800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{12809}}^1$

素因数の和:12836

約数の個数: 48

約数和(自身を含む): 71479800

約数和(自身を除く): 43300000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 12809, 25618, 51236, 64045, 102472, 128090, 140899, 256180, 281798, 320225, 512360, 563596, 640450, 704495, 1127192, 1280900, 1408990, 2561800, 2817980, 3522475, 5635960, 7044950, 14089900, 28179800]

約数ペア:

[(1, 28179800), (2, 14089900), (4, 7044950), (5, 5635960), (8, 3522475), (10, 2817980), (11, 2561800), (20, 1408990), (22, 1280900), (25, 1127192), (40, 704495), (44, 640450), (50, 563596), (55, 512360), (88, 320225), (100, 281798), (110, 256180), (200, 140899), (220, 128090), (275, 102472), (440, 64045), (550, 51236), (1100, 25618), (2200, 12809)]