19915886

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1\times {\mathrm{881}}^1$

素因数の和:1099

約数の個数: 16

約数和(自身を含む): 30481920

約数和(自身を除く): 10566034

約数列:

[1, 2, 89, 127, 178, 254, 881, 1762, 11303, 22606, 78409, 111887, 156818, 223774, 9957943, 19915886]

約数ペア:

[(1, 19915886), (2, 9957943), (89, 223774), (127, 156818), (178, 111887), (254, 78409), (881, 22606), (1762, 11303)]