21099861

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{757}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 32321120

約数和(自身を除く): 11221259

約数列:

[1, 3, 9, 19, 57, 163, 171, 489, 757, 1467, 2271, 3097, 6813, 9291, 14383, 27873, 43149, 123391, 129447, 370173, 1110519, 2344429, 7033287, 21099861]

約数ペア:

[(1, 21099861), (3, 7033287), (9, 2344429), (19, 1110519), (57, 370173), (163, 129447), (171, 123391), (489, 43149), (757, 27873), (1467, 14383), (2271, 9291), (3097, 6813)]