855800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{389}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 2176200

約数和(自身を除く): 1320400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 389, 440, 550, 778, 1100, 1556, 1945, 2200, 3112, 3890, 4279, 7780, 8558, 9725, 15560, 17116, 19450, 21395, 34232, 38900, 42790, 77800, 85580, 106975, 171160, 213950, 427900, 855800]

約数ペア:

[(1, 855800), (2, 427900), (4, 213950), (5, 171160), (8, 106975), (10, 85580), (11, 77800), (20, 42790), (22, 38900), (25, 34232), (40, 21395), (44, 19450), (50, 17116), (55, 15560), (88, 9725), (100, 8558), (110, 7780), (200, 4279), (220, 3890), (275, 3112), (389, 2200), (440, 1945), (550, 1556), (778, 1100)]