28860980

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{2939}}^1$

素因数の和:3439

約数の個数: 24

約数和(自身を含む): 60752160

約数和(自身を除く): 31891180

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 2939, 4910, 5878, 9820, 11756, 14695, 29390, 58780, 1443049, 2886098, 5772196, 7215245, 14430490, 28860980]

約数ペア:

[(1, 28860980), (2, 14430490), (4, 7215245), (5, 5772196), (10, 2886098), (20, 1443049), (491, 58780), (982, 29390), (1964, 14695), (2455, 11756), (2939, 9820), (4910, 5878)]