21920254

素因数分解:

$2^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{1097}}^1$

素因数の和:1299

約数の個数: 16

約数和(自身を含む): 33572448

約数和(自身を除く): 11652194

約数列:

[1, 2, 97, 103, 194, 206, 1097, 2194, 9991, 19982, 106409, 112991, 212818, 225982, 10960127, 21920254]

約数ペア:

[(1, 21920254), (2, 10960127), (97, 225982), (103, 212818), (194, 112991), (206, 106409), (1097, 19982), (2194, 9991)]