18640539

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1627}}^1$

素因数の和:1719

約数の個数: 24

約数和(自身を含む): 28783040

約数和(自身を除く): 10142501

約数列:

[1, 3, 9, 19, 57, 67, 171, 201, 603, 1273, 1627, 3819, 4881, 11457, 14643, 30913, 92739, 109009, 278217, 327027, 981081, 2071171, 6213513, 18640539]

約数ペア:

[(1, 18640539), (3, 6213513), (9, 2071171), (19, 981081), (57, 327027), (67, 278217), (171, 109009), (201, 92739), (603, 30913), (1273, 14643), (1627, 11457), (3819, 4881)]