19791919

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{409}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 23511040

約数和(自身を除く): 3719121

約数列:

[1, 7, 31, 217, 223, 409, 1561, 2863, 6913, 12679, 48391, 88753, 91207, 638449, 2827417, 19791919]

約数ペア:

[(1, 19791919), (7, 2827417), (31, 638449), (217, 91207), (223, 88753), (409, 48391), (1561, 12679), (2863, 6913)]