21920426

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43321}}^1$

素因数の和:43357

約数の個数: 16

約数和(自身を含む): 37430208

約数和(自身を除く): 15509782

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 43321, 86642, 476531, 953062, 996383, 1992766, 10960213, 21920426]

約数ペア:

[(1, 21920426), (2, 10960213), (11, 1992766), (22, 996383), (23, 953062), (46, 476531), (253, 86642), (506, 43321)]