21120286

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{50527}}^1$

素因数の和:50559

約数の個数: 16

約数和(自身を含む): 36380160

約数和(自身を除く): 15259874

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 50527, 101054, 555797, 960013, 1111594, 1920026, 10560143, 21120286]

約数ペア:

[(1, 21120286), (2, 10560143), (11, 1920026), (19, 1111594), (22, 960013), (38, 555797), (209, 101054), (418, 50527)]