31281819

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 45909504

約数和(自身を除く): 14627685

約数列:

[1, 3, 17, 51, 53, 71, 159, 163, 213, 489, 901, 1207, 2703, 2771, 3621, 3763, 8313, 8639, 11289, 11573, 25917, 34719, 63971, 146863, 191913, 196741, 440589, 590223, 613369, 1840107, 10427273, 31281819]

約数ペア:

[(1, 31281819), (3, 10427273), (17, 1840107), (51, 613369), (53, 590223), (71, 440589), (159, 196741), (163, 191913), (213, 146863), (489, 63971), (901, 34719), (1207, 25917), (2703, 11573), (2771, 11289), (3621, 8639), (3763, 8313)]