1991231452

素因数分解:

$2^2\times 7^1\times {\mathrm{71115409}}^1$

素因数の和:71115420

約数の個数: 12

約数和(自身を含む): 3982462960

約数和(自身を除く): 1991231508

約数列:

[1, 2, 4, 7, 14, 28, 71115409, 142230818, 284461636, 497807863, 995615726, 1991231452]

約数ペア:

[(1, 1991231452), (2, 995615726), (4, 497807863), (7, 284461636), (14, 142230818), (28, 71115409)]