81272775

素因数分解:

$3^1\times 5^2\times {\mathrm{491}}^1\times {\mathrm{2207}}^1$

素因数の和:2711

約数の個数: 24

約数和(自身を含む): 134705664

約数和(自身を除く): 53432889

約数列:

[1, 3, 5, 15, 25, 75, 491, 1473, 2207, 2455, 6621, 7365, 11035, 12275, 33105, 36825, 55175, 165525, 1083637, 3250911, 5418185, 16254555, 27090925, 81272775]

約数ペア:

[(1, 81272775), (3, 27090925), (5, 16254555), (15, 5418185), (25, 3250911), (75, 1083637), (491, 165525), (1473, 55175), (2207, 36825), (2455, 33105), (6621, 12275), (7365, 11035)]