21311906

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{138389}}^1$

素因数の和:138409

約数の個数: 16

約数和(自身を含む): 39856320

約数和(自身を除く): 18544414

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 138389, 276778, 968723, 1522279, 1937446, 3044558, 10655953, 21311906]

約数ペア:

[(1, 21311906), (2, 10655953), (7, 3044558), (11, 1937446), (14, 1522279), (22, 968723), (77, 276778), (154, 138389)]