21118937

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1637}}^1$

素因数の和:1760

約数の個数: 16

約数和(自身を含む): 25683840

約数和(自身を除く): 4564903

約数列:

[1, 7, 19, 97, 133, 679, 1637, 1843, 11459, 12901, 31103, 158789, 217721, 1111523, 3016991, 21118937]

約数ペア:

[(1, 21118937), (7, 3016991), (19, 1111523), (97, 217721), (133, 158789), (679, 31103), (1637, 12901), (1843, 11459)]