19911390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{663713}}^1$

素因数の和:663723

約数の個数: 16

約数和(自身を含む): 47787408

約数和(自身を除く): 27876018

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 663713, 1327426, 1991139, 3318565, 3982278, 6637130, 9955695, 19911390]

約数ペア:

[(1, 19911390), (2, 9955695), (3, 6637130), (5, 3982278), (6, 3318565), (10, 1991139), (15, 1327426), (30, 663713)]