19878914

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1\times {\mathrm{1367}}^1$

素因数の和:2041

約数の個数: 16

約数和(自身を含む): 32602176

約数和(自身を除く): 12723262

約数列:

[1, 2, 11, 22, 661, 1322, 1367, 2734, 7271, 14542, 15037, 30074, 903587, 1807174, 9939457, 19878914]

約数ペア:

[(1, 19878914), (2, 9939457), (11, 1807174), (22, 903587), (661, 30074), (1322, 15037), (1367, 14542), (2734, 7271)]