339980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:289

約数の個数: 24

約数和(自身を含む): 725760

約数和(自身を除く): 385780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 191, 356, 382, 445, 764, 890, 955, 1780, 1910, 3820, 16999, 33998, 67996, 84995, 169990, 339980]

約数ペア:

[(1, 339980), (2, 169990), (4, 84995), (5, 67996), (10, 33998), (20, 16999), (89, 3820), (178, 1910), (191, 1780), (356, 955), (382, 890), (445, 764)]