85580

素因数分解:

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

素因数の和:409

約数の個数: 24

約数和(自身を含む): 196560

約数和(自身を除く): 110980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 389, 778, 1556, 1945, 3890, 4279, 7780, 8558, 17116, 21395, 42790, 85580]

約数ペア:

[(1, 85580), (2, 42790), (4, 21395), (5, 17116), (10, 8558), (11, 7780), (20, 4279), (22, 3890), (44, 1945), (55, 1556), (110, 778), (220, 389)]