16638921

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2003}}^1$

素因数の和:2093

約数の個数: 24

約数和(自身を含む): 26260416

約数和(自身を除く): 9621495

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2003, 2769, 6009, 8307, 18027, 26039, 78117, 142213, 234351, 426639, 1279917, 1848769, 5546307, 16638921]

約数ペア:

[(1, 16638921), (3, 5546307), (9, 1848769), (13, 1279917), (39, 426639), (71, 234351), (117, 142213), (213, 78117), (639, 26039), (923, 18027), (2003, 8307), (2769, 6009)]