19990686579

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{659}}^1\times {\mathrm{215141}}^1$

素因数の和:215850

約数の個数: 16

約数和(自身を含む): 27262794240

約数和(自身を除く): 7272107661

約数列:

[1, 3, 47, 141, 659, 1977, 30973, 92919, 215141, 645423, 10111627, 30334881, 141777919, 425333757, 6663562193, 19990686579]

約数ペア:

[(1, 19990686579), (3, 6663562193), (47, 425333757), (141, 141777919), (659, 30334881), (1977, 10111627), (30973, 645423), (92919, 215141)]