19758519

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{937}}^1$

素因数の和:1028

約数の個数: 32

約数和(自身を含む): 32417280

約数和(自身を除く): 12658761

約数列:

[1, 3, 9, 11, 27, 33, 71, 99, 213, 297, 639, 781, 937, 1917, 2343, 2811, 7029, 8433, 10307, 21087, 25299, 30921, 66527, 92763, 199581, 278289, 598743, 731797, 1796229, 2195391, 6586173, 19758519]

約数ペア:

[(1, 19758519), (3, 6586173), (9, 2195391), (11, 1796229), (27, 731797), (33, 598743), (71, 278289), (99, 199581), (213, 92763), (297, 66527), (639, 30921), (781, 25299), (937, 21087), (1917, 10307), (2343, 8433), (2811, 7029)]