21642803

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5531}}^1$

素因数の和:5594

約数の個数: 16

約数和(自身を含む): 27261696

約数和(自身を除く): 5618893

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 5531, 38717, 71903, 237833, 503321, 1664831, 3091829, 21642803]

約数ペア:

[(1, 21642803), (7, 3091829), (13, 1664831), (43, 503321), (91, 237833), (301, 71903), (559, 38717), (3913, 5531)]