21580306

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{7057}}^1$

素因数の和:7209

約数の個数: 16

約数和(自身を含む): 35572320

約数和(自身を除く): 13992014

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 7057, 14114, 77627, 155254, 980923, 1961846, 10790153, 21580306]

約数ペア:

[(1, 21580306), (2, 10790153), (11, 1961846), (22, 980923), (139, 155254), (278, 77627), (1529, 14114), (3058, 7057)]