399117818

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{81353}}^1$

素因数の和:81589

約数の個数: 16

約数和(自身を含む): 656038656

約数和(自身を除く): 256920838

約数列:

[1, 2, 11, 22, 223, 446, 2453, 4906, 81353, 162706, 894883, 1789766, 18141719, 36283438, 199558909, 399117818]

約数ペア:

[(1, 399117818), (2, 199558909), (11, 36283438), (22, 18141719), (223, 1789766), (446, 894883), (2453, 162706), (4906, 81353)]